standard region
1 = north
2 = yorkshire & humberside
3 = east midlands
4 = east anglia
5 = south east (excl. london)
6 = south west
7 = west midlands
8 = north west
9 = wales
10 = scotland
11 = greater london

government office region
1 = north east
2 = north west (incl. the old 'merseyside' region)
4 = yorkshire & humber
5 = east midlands
6 = west midlands
7 = south west
8 = eastern
9 = london
10 = south east
11 = wales
12 = scotland

government office region (grouped)
1 = england
2 = scotland
3 = wales

respondent's sex
1 = male
2 = female

respondent's opinion of own health
1 = very good
2 = good
3 = fair
4 = bad
5 = very bad
9 = not answered

respondent has a disability
1 = yes
2 = no
9 = not answered

respondent's activities are limited by their disability
-1 = not applicable
1 = yes
2 = no
9 = not answered

no. of pregnancies antenatal visits were for in last 5 years
-1 = not applicable
9 = not answered

blood test as part of ante-natal care since 1 jan 1988
-1 = not applicable
1 = yes, more than 5 years ago but since 1 jan 1988
2 = no, before 1988 only
9 = not answered

check never drink alcohol nowadays
-1 = not applicable
1 = very occasionally
2 = never
9 = not answered

average frequency of alcohol consumption in last 12 months
-1 = not applicable
1 = 5+ days a week
2 = 3/4 days a week
3 = once/twice a week
4 = once/twice a month
5 = once/twice in the last 12 months
6 = not at all in the last 12 months
9 = not answered

average alcohol intake when do drink (excl. parties/special occasions)
0 = drink less frequently than once/twice a month
1 = 1 or 2
2 = 3 or 4
3 = 5 or 6
4 = >6
6 = less than 1 unit
7 = only drink on special occasions/at parties
8 = varies too much to say/other answers
9 = not answered

number of cigarettes usually smoked a day
99 = not answered

weight in kilograms
999 = not answered

certainty of weight
-1 = not applicable
1 = fairly sure
2 = estimate
9 = not answered

any brothers or sisters
1 = yes, brother(s) only
2 = yes, sister(s) only
3 = yes, both
4 = no, none
9 = not answered

position in family
-1 = not applicable
1 = oldest
2 = youngest
3 = in between
9 = not answered

why didn't live with both natural parents continuously to age 16
-1 = not applicable
1 = divorce/separation
2 = death
3 = adopted
4 = parents never lived together
5 = parents were abroad
6 = in care
7 = other reason
8 = lived with grandparent(s)/other relative
9 = left home before age 16
99 = not answered

which parent lived with to age 16
-1 = not applicable
1 = mother
2 = father
3 = other relative
4 = other (including in care or fostered)
9 = not answered

natural children have same other parent
-1 = not applicable
1 = yes, both/all the same other parent
2 = no, different other parent
9 = not answered

ease with which discussed sex with parents around age 14
-1 = not applicable
1 = easy with one/both
2 = difficult
3 = did not discuss with either
4 = varied/depended on topic
9 = not answered

source of sex education 1
1 = mother
2 = father
3 = brother(s)
4 = sister(s)
5 = other relative(s)
6 = lessons at school
7 = friends of about my own age
8 = first boy/girl friend/sexual partner
9 = doctor/nurse/clinic
10 = television/radio
11 = videos
12 = books
13 = magazines/newspapers
14 = other
15 = more than 12 ways
98 = can't remember
99 = not answered

source of sex education 2
-1 = not applicable
1 = mother
2 = father
3 = brother(s)
4 = sister(s)
5 = other relative(s)
6 = lessons at school
7 = friends of about my own age
8 = first boy/girl friend/sexual partner
9 = doctor/nurse/clinic
10 = television/radio
11 = videos
12 = books
13 = magazines/newspapers
14 = other
99 = not answered

other source of sex education 1
-1 = not applicable
1 = mother
2 = father
3 = brother(s)
4 = sister(s)
5 = other relative(s)
6 = lessons at school
7 = friends of about my own age
8 = first boy/girl friend/sexual partner
9 = doctor/nurse/clinic
10 = television/radio
11 = videos
12 = books
13 = magazines/newspapers
14 = other
15 = more than 12 ways
16 = lesson/course (i.e. formal teaching)
17 = cinema/films (other than tv/video)
18 = through (own) experience
19 = hearing people talk (incl. in pubs)
20 = the internet
99 = not answered

main source of sex education (if more than one source reported)
-1 = not applicable
1 = mother
2 = father
3 = brother(s)
4 = sister(s)
5 = other relative(s)
6 = lessons at school
7 = friends of about my own age
8 = first boy/girl friend/sexual partner
9 = doctor/nurse/clinic
10 = television/radio
11 = videos
12 = books
13 = magazines/newspapers
14 = other
15 = can't choose just one
99 = not answered

at time of 1st sexual expereince, needed to have known more about 1
1 = how girls bodies develop
2 = how boys bodies develop
3 = how a baby is born
4 = sexual intercourse
5 = contraception/birth control
6 = homosexuality/lesbianism
7 = masturbation
8 = how to make sex more satisfying
9 = how to be able to say no
10 = sexual feelings/emotions & relationships
11 = stds
12 = all of them
97 = would liked to have known more but can t specify which
98 = none of these, knew enough
99 = none, not ready for sexual experience yet
998 = can't remember
999 = not answered

at time of 1st sexual expereince, needed to have known more about 2
-1 = not applicable
1 = how girls bodies develop
2 = how boys bodies develop
3 = how a baby is born
4 = sexual intercourse
5 = contraception/birth control
6 = homosexuality/lesbianism
7 = masturbation
8 = how to make sex more satisfying
9 = how to be able to say no
10 = sexual feelings/emotions & relationships
11 = stds
999 = not answered

preferred other source of additional info on sex 1
-1 = not applicable
1 = mother
2 = father
3 = brother(s)
4 = sister(s)
5 = other relative(s)
6 = lessons at school
7 = friends of about my own age
8 = first boy/girl friend/sexual partner
9 = doctor/nurse/clinic
10 = television/radio
11 = videos
12 = books
13 = magazines/newspapers
14 = other
15 = lesson/course (i.e. formal teaching)
16 = cinema/films (not tv or video)
17 = through (own) experience
18 = hearing people talk (incl. in pubs)
19 = the internet
20 = don't know
21 = none of these
99 = not answered

age at 1st het. sex. intercourse
95 = not sure of age
96 = has not happened yet
97 = refusal
99 = not answered

estimated age at 1st het. sex. intercourse
-1 = not applicable
99 = not answered

had het. sex. intercourse aged 13+ if 1st sex age<13
-1 = not applicable
1 = yes
2 = not with anyone else since age<13
97 = refusal
99 = not answered

age at next het. sex. intercourse if 1st sex age<13
-1 = not applicable
95 = not sure of age
96 = has not happened since age<13
97 = refusal
99 = not answered

private enough to ask questions about 1st het. sex. intercourse aged 13+
-1 = not applicable
1 = yes
2 = definitely not
9 = not answered

offered & accepted self-completion sheet about 1st het. sex. intercourse
-1 = not applicable
1 = sheet accepted
2 = prefers to be asked questions
9 = not recorded

why self-completion sheet not completed
-1 = not applicable
1 = another person (regardless of age) in the room
2 = prefers to be asked questions
3 = other
9 = not recorded

check completion of self-completion sheet
-1 = not applicable
1 = sheet completed, no queries
2 = sheet completed, after query/ies
3 = sheet not completed/refusal
4 = sheet completed and entered by interviewer

age of 1st partner if 1st het. sex. intercourse aged 13+
-1 = not applicable
95 = estimated partner's age
97 = never knew partner's age
98 = can't remember partner's age
99 = not answered

1st het. sex. intercourse ever for partner too if het. sex. intercourse aged 13+
-1 = not applicable
1 = yes, first time
2 = think it was first time
3 = think it was not first time
4 = no, not first time
8 = can't remember
9 = not answered

respondent and partner both willing to have sex if het. sex. intercourse aged 13
-1 = not applicable
1 = both willing
2 = respondent more willing
3 = partner more willing
9 = not answered

partner was more willing to have sex if het. sex. intercourse aged 13+
-1 = not applicable
1 = respondent also willing
2 = respondent had to be persuaded
3 = respondent was forced
9 = not answered

contraception used with partner at 1st het. sex. intercourse aged 13+ 1
-1 = not applicable
1 = condom
2 = the pill
3 = other contraception
4 = withdrawal
5 = safe period
6 = respondent no, but partner may have done
7 = neither used any contraception
8 = can't remember
9 = not answered

type of relationship with partner at 1st het. sex. intercourse aged 13+
-1 = not applicable
1 = prostitute (men only)
2 = just met for the first time
3 = had met recently
4 = known each other for a while, but not a steady relationship
5 = steady relationship
6 = living together (but not married/engaged)
7 = engaged
8 = married
9 = other
10 = work colleague/employer
11 = knew well/for a long time
12 = rape/sexual abuse
98 = can't remember
99 = not answered

opinion now of timing of 1st het. sex. intercourse aged 13+
-1 = not applicable
1 = should have waited longer
2 = should not have waited so long
3 = about the right time
8 = can't remember
9 = not answered

main reason for intercourse at the time of 1st het. sex. intercourse aged 13+
-1 = not applicable
1 = curious
2 = carried away by feelings
3 = peers doing it
4 = natural follow-on in relationship
5 = a bit drunk at the time
6 = wanted to lose my virginity
7 = in love
8 = other particular reason
9 = can't choose/more than one reason
10 = can't remember
11 = to please partner
12 = felt ready
13 = rape/forced
99 = not answered

reason for intercourse at the time of 1st het. sex. intercourse aged 13+ 1
-1 = not applicable
1 = curious
2 = carried away by feelings
3 = peers doing it
4 = natural follow-on in relationship
5 = a bit drunk at the time
6 = wanted to lose my virginity
7 = in love
8 = other particular reason
99 = not answered

contraception ever used 1
-1 = not applicable
1 = mini pill
2 = combined pill
3 = pill, not sure which
4 = mirena
5 = coil/other device
6 = condom
7 = femidom
8 = cap/diaphragm
9 = gels/sprays/pessaries
10 = contraceptive sponge
11 = persona
12 = rhythm method
13 = withdrawal
14 = injections
15 = implanted capsules
16 = emergency contraception
17 = female sterilisation
18 = male sterilisation
19 = abstinence
20 = other
21 = no method, ever
99 = not answered

contraception ever used 2
-1 = not applicable
1 = mini pill
2 = combined pill
3 = pill, not sure which
4 = mirena
5 = coil/other device
6 = condom
7 = femidom
8 = cap/diaphragm
9 = gels/sprays/pessaries
10 = contraceptive sponge
11 = persona
12 = rhythm method
13 = withdrawal
14 = injections
15 = implanted capsules
16 = emergency contraception
17 = female sterilisation
18 = male sterilisation
19 = abstinence
20 = other
99 = not answered

other contraception ever used 1
-1 = not applicable
1 = mini pill
2 = combined pill
3 = pill, not sure which
4 = mirena
5 = coil/other device
6 = condom
7 = femidom
8 = cap/diaphragm
9 = gels/sprays/pessaries
10 = contraceptive sponge
11 = persona
12 = rhythm method
13 = withdrawal
14 = injections
15 = implanted capsules
16 = emergency contraception
17 = female sterilisation
18 = male sterilisation
19 = abstinence
20 = other
21 = no method, ever
22 = sterile from operation/for medical reasons
99 = not answered

contraception used in last year 1
-1 = not applicable
1 = mini pill
2 = combined pill
3 = pill, not sure which
4 = mirena
5 = coil/other device
6 = condom
7 = femidom
8 = cap/diaphragm
9 = gels/sprays/pessaries
10 = contraceptive sponge
11 = persona
12 = rhythm method
13 = withdrawal
14 = injections
15 = implanted capsules
16 = emergency contraception
17 = female sterilisation
18 = male sterilisation
19 = abstinence
20 = other
21 = no method in last year/ever
99 = not answered

usual contraception 1
-1 = not applicable
1 = mini pill
2 = combined pill
3 = pill, not sure which
4 = mirena
5 = coil/other device
6 = condom
7 = femidom
8 = cap/diaphragm
9 = gels/sprays/pessaries
10 = contraceptive sponge
11 = persona
12 = rhythm method
13 = withdrawal
14 = injections
15 = implanted capsules
16 = emergency contraception
17 = female sterilisation
18 = male sterilisation
19 = abstinence
20 = other
21 = no method in last year
22 = no usual method
99 = not answered

why used condoms in last year
-1 = not applicable
1 = to prevent pregnancy
2 = to protect against hiv/stds
3 = to prevent pregnancy & to protect against hiv/stds
9 = not answered

main reason for using condoms in last year
-1 = not applicable
1 = to prevent pregnancy
2 = to protect against hiv/stds
3 = both reasons equal
4 = depends on who the partner is
5 = don't know
9 = not answered

source of contraceptive advice/supplies in last year 1
1 = own gp
2 = another gp at respondents gp surgery
3 = fp clinic at respondents gp surgery
4 = fp clinic, local health authority
5 = sexual health/contraceptive service for young people
6 = chemist shop/pharmacy
7 = over the counter at another shop (e.g. petrol station, super
8 = vending machine
9 = through the post
10 = emergency department at a hospital
11 = any other type of service
12 = none of these
99 = not answered

source of contraceptive advice/supplies in last year 2
-1 = not applicable
1 = own gp
2 = another gp at respondents gp surgery
3 = fp clinic at respondents gp surgery
4 = fp clinic, local health authority
5 = sexual health/contraceptive service for young people
6 = chemist shop/pharmacy
7 = over the counter at another shop (e.g. petrol station, super
8 = vending machine
9 = through the post
10 = emergency department at a hospital
11 = any other type of service
12 = none of these
99 = not answered

other source of contraceptive advice/supplies in last year 1
-1 = not applicable
1 = own gp
2 = another gp at respondents gp surgery
3 = fp clinic at respondents gp surgery
4 = fp clinic, local health authority
5 = sexual health/contraceptive service for young people
6 = chemist shop/pharmacy
7 = over the counter at another shop (e.g. petrol station, super
8 = vending machine
9 = through the post
10 = emergency department at a hospital
11 = any other type of service
12 = none of these
13 = gum/vd/urinary clinic
14 = other doctor/hospital/(medical) clinic
15 = partner provides (if he has them)
16 = given by parent/relative/friend
17 = retail outlet/pub (not already stated)
99 = not answered

preferred source of professional advice for contraception
1 = own gp
2 = another gp at respondents gp surgery
3 = fp clinic at respondents gp surgery
4 = fp clinic, local health authority
5 = sexual health/contraceptive service for young people
6 = chemist shop/pharmacy
7 = none of these
9 = not answered

sexual attraction
1 = opposite sex only
2 = more often opposite sex, and at least once same sex
3 = about equally often to opposite sex and same sex
4 = more often same sex, and at least once opposite sex
5 = same sex only
6 = never felt sexually attracted to anyone at all
7 = refused
9 = not answered

heterosexual/homosexual sexual experience
1 = opposite sex only
2 = more often opposite sex, and at least once same sex
3 = about equally often to opposite sex and same sex
4 = more often same sex, and at least once opposite sex
5 = same sex only
6 = never had sexual experience with anyone at all
7 = refused
9 = not answered

eligible respondents accepted the casi
-1 = not applicable
1 = eligible respondent accepted casi
2 = casi asked face-to-face by interviewer
3 = respondent refused casi
9 = not answered

reason 1 for casi refusal
-1 = not applicable
1 = didn't like computers
2 = eyesight problems
3 = could not read/write
4 = other disability
5 = objected to subject
6 = worried about confidentiality
7 = language problems
8 = ran out of time
9 = couldn t be bothered
10 = other reason
99 = not answered

other reason for casi refusal 1
-1 = not applicable
1 = didn't like computers
2 = eyesight problems
3 = couldn't read/write
4 = other disability
5 = objected to subject
6 = worried about confidentiality
7 = language problems
8 = ran out of time
9 = couldn't be bothered
10 = other reason (comment present)
11 = other reason (no comment present)
99 = not answered

whether eligible respondents who refused casi accepted paper version
-1 = not applicable
1 = yes, willing to accept paper version of casi
2 = no, not willing to accept paper version of casi
9 = not answered

no. of occasions of het. sex in last 4 weeks
-1 = not applicable
999 = not answered

no. of occasions of het. sex in last 4 weeks
-1 = not applicable
996 = not had vaginal sex in last 4 wks but other het. practices
997 = not had het. sex yet
999 = not answered

summary: had het. sex. intercourse (according to self-completion)
0 = no het. sex
1 = had het. sex at least once
9 = not answered

certainty of no. of occasions of het. sex in last 4 weeks
-1 = not applicable
1 = certain
2 = estimate
9 = not answered

no. of het. sex partners in last 4 weeks
-1 = not applicable
995 = at least 1 partner
996 = at least 2 partners
997 = at least 3 partners
999 = not answered

condom use for het. sex in last 4 weeks
-1 = not applicable
1 = yes, used on every occasion
2 = yes, used on some occasions
3 = not used in the last 4 weeks
4 = not had vaginal/anal sex in last 4 weeks
9 = not answered

no. of occasions of het. sex in last 7 days
-1 = not applicable
95 = not had vaginal sex in last 7 days but other het. practices
99 = not answered

last occasion of vaginal sex
-1 = not applicable
1 = in last 7 days
2 = between 7 days and 4 weeks
3 = between 4 weeks and 6 months
4 = between 6 months and 1 year
5 = between 1 year and 5 years
6 = longer than 5 years
7 = never
9 = not answered

last occasion of het. oral sex to partner
-1 = not applicable
1 = in last 7 days
2 = between 7 days and 4 weeks
3 = between 4 weeks and 6 months
4 = between 6 months and 1 year
5 = between 1 year and 5 years
6 = longer than 5 years ago
7 = never
9 = not answered

had vaginal/het. anal sex without a condom in last year
-1 = not applicable
1 = yes, without condom
2 = no, always with condom
3 = was code 2 but other data suggests code 1
7 = no vaginal/het. anal sex in last year
9 = not answered

no. of vaginal/het.anal partners in last year without a condom
-1 = not applicable
0 = no unprotected vaginal/het. anal sex in last year
996 = was code 2 for 'yrcond' but other data suggests code 1
999 = not answered

had hom. sex. aged 13+ if 1st hom. sex. age<13
-1 = not applicable
1 = yes
2 = not with anybody else since age 13
9 = not answered

no. of hom. sex. partners in last 4 weeks
-1 = not applicable
995 = at least 1
996 = at least 2
997 = at least 3
999 = not answered

condom use for hom. anal sex in last 4 weeks
-1 = not applicable
1 = yes, used on every occasion
2 = yes, used on some occasions
3 = not used in the last 4 weeks
4 = not had anal sex in the last 4 weeks
9 = not answered

frequency of condom use for hom. anal sex in last year
-1 = not applicable
1 = everytime
2 = most times
3 = occasionally
4 = not at all in the last year
9 = not answered

frequency go to gay pubs/gay clubs
-1 = not applicable
1 = 4 times a week or more
2 = 2 or 3 times a week
3 = about once a week
4 = at least once every 2 weeks
5 = at least once a month
6 = at least once every 3 months
7 = at least once every 6 months
8 = at least once a year
9 = less often
10 = never
99 = not answered

no. of het. sex partners, life
-1 = not applicable
9995 = at least one
9996 = at least two
9997 = at least three
9999 = not answered

no. of het. sex partners, last year
-1 = not applicable
995 = at least one
996 = at least two
997 = at least three
999 = not answered

no. of hom. sex partners, life
-1 = not applicable
9995 = at least 1
9996 = at least 2
9997 = at least 3
9999 = not answered

new hom. sex partner, last year (if 1 hom. partner in last year)
-1 = not applicable
1 = yes
2 = no
999 = not answered

no. of new sex partners while outside uk, last 5 years
-1 = not applicable
9999 = not answered

origin of new sex partner(s) while outside uk, last 5 years 1
-1 = not applicable
0 = uk
1 = other eu
2 = australia, new zealand
3 = north america
4 = south america
5 = caribbean
6 = asia
7 = middle east
8 = sub-saharan africa
9 = other
99 = not answered

origin of new sex partner(s) while in uk, last 5 years 1
-1 = not applicable
1 = other eu
2 = australia, new zealand
3 = north america
4 = south america
5 = caribbean
6 = asia
7 = middle east
8 = sub-saharan africa
9 = other
10 = don't know/can't remember
99 = not answered

sex of most recent partner
-1 = not applicable
1 = male
2 = female
9 = not answered

most recent occasion also first occasion with most recent partner
-1 = not applicable
1 = yes, was the first occasion
2 = no, was not the first occasion
9 = not answered

age on 1st oocasion of most recent partner
-1 = not applicable
97 = don't know
99 = not answered

relationship with most recent partner
-1 = not applicable
1 = currently/ever married to each other
2 = living together but never married
3 = regular partners but never lived together
4 = not regular partners
9 = not answered

where first met most recent partner
-1 = not applicable
1 = at school
2 = at university or college
3 = at/through work
4 = in a pub/cafe/restaurant/bar/club
5 = at a social event organised by friend(s)
6 = through a society, sports club
7 = on holiday/while travelling
8 = in a public place (e.g. park, museum)
9 = through a dating agency/chat line
10 = have always known each other
11 = other
12 = at church
13 = neighbour/lived locally/shared a flat
14 = at another public place
15 = arranged marriage
16 = prostitute/red light district
17 = through friends or relatives
99 = not answered

where most recent partner lived when 1st met
-1 = not applicable
1 = same city/town
2 = same region, different town
3 = same country, different region
4 = different country
5 = unknown
9 = not answered

time between meeting most recent partner and first sex
-1 = not applicable
1 = 24 hours or less
2 = between 1 day and 1 week
3 = between 1 week and 4 weeks
4 = between 4 weeks and 6 months
5 = between 6 months and 1 year
6 = between 1 year and 5 years
7 = between 5 years and 10 years
8 = 10 years or more
99 = not answered

when last paid money for het. sex
-1 = not applicable
1 = in last 7 days
2 = between 7 days and 4 weeks
3 = between 4 weeks and 1 year
4 = between 1 year and 5 years
5 = longer than 5 years
9 = not answered

het. sex partner total includes women paid for sex
-1 = not applicable
1 = yes, included
2 = no, not included
9 = not answered

(last) miscarriage or still birth
-1 = not applicable
1 = in last year
2 = between 1 and 5 years
3 = between 5 and 10 years
4 = longer than 10 years
9 = not answered

when (last) attended a std clinic
-1 = not applicable
1 = in last 4 weeks
2 = between 4 weeks & 3 months
3 = between 3 months & 1 year
4 = between 1 year and 2 years
5 = between 2 & 3 years
6 = between 3 & 4 years
7 = between 4 & 5 years
8 = longer than 5 years
99 = not answered

std diagnosis 1
-1 = not applicable
1 = genital herpes
2 = trichomonas
3 = gonorrhoea
4 = syphilis
5 = chlamydia
6 = non-specific or non-gonococcal urethritis
7 = genital warts
8 = pelvic inflammatory disease
9 = vaginal thrush
10 = yes, but can not remember
11 = none of these
99 = not answered

no. of times diagnosed with trichomonas, last 5 years
-1 = not applicable
98 = not answered but have had trichomonas in last 5 years
99 = not answered

no. of times diagnosed with gonorrhoea, last 5 years
-1 = not applicable
98 = not answered but have had gonorrhoea in last 5 years
99 = not answered

no. of times diagnosed with syphilis, last 5 years
-1 = not applicable
98 = not answered but have had syphilis in last 5 years
99 = not answered

no. of times diagnosed with chlamydia, last 5 years
-1 = not applicable
98 = not answered but have had chlamydia in last 5 years
99 = not answered

where (last) treated for trichomonas, last 5 years
-1 = not applicable
1 = gp surgery
2 = nhs vd/std/sexual health clinic
3 = nhs family planning clinic
4 = private clinic or doctor
5 = somewhere else
99 = not answered

injected drugs prescribed by a doctor for a medical condition
-1 = not applicable
1 = all prescribed
2 = some prescribed
3 = none prescribed
9 = not answered

medical condition 1 for which the drugs were prescribed
-1 = not applicable
1 = diabetes
2 = allergic disorders
3 = chronic pain
4 = thrombosis/embolus
5 = infections
6 = psychiatric illness
7 = drug addiction
8 = other
99 = not answered

last time injected non-prescribed drugs or other substances
-1 = not applicable
1 = last 7 days
2 = between 7 days and 4 weeks
3 = between 4 weeks and 1 year
4 = between 1 and 5 years
5 = longer than 5 years ago
9 = not answered

ever shared a needle or other equipment used for injecting
-1 = not elig for s-compltn/never injected (non-prescribed) drugs
1 = yes
2 = no
9 = not answered

when last donated blood (since beginning of 1986)
-1 = not applicable
1 = in the last year
2 = between 1 and 2 years ago
3 = between 2 and 5 years ago
4 = longer than 5 years ago but since beginning of 1986
9 = not answered

ever had a blood test for hiv other than when giving blood
-1 = not applicable
1 = yes
2 = no
3 = maybe/not sure
4 = prefer not to answer
9 = not answered

reason 1 for hiv blood test
-1 = not applicable
1 = pregnancy
2 = insurance, mortgage, or travel
3 = general health check
4 = concern of risk to self/partner
5 = other
9 = not answered

when was blood test for hiv (last one if more than one)
-1 = not applicable
1 = in the last year
2 = between 1 year and 2 years ago
3 = between 2 years and 5 years ago
4 = longer than 5 years ago
9 = not answered

where had blood test for hiv (last one if more than one)
-1 = not applicable
1 = gp surgery
2 = nhs vd/std/sexual health clinic
3 = nhs family planning clinic
4 = private clinic or doctor
5 = somewhere else
9 = not answered

eligible respondents accepted casi
-1 = not eligible for self-completion
1 = casi only partially completed
2 = casi completed with no help/advice
3 = casi completed with some help/advice
9 = not answered

circumcised
-1 = not applicable
1 = yes
2 = no
3 = question not understood
9 = not answered

importance for a successful marriage/long-term relationship: faithfulness
1 = very important
2 = quite important
3 = not very important
4 = not important at all
8 = don't know
9 = not answered

importance for a successful marriage/long-term relationship: shared religious be
1 = very important
2 = quite important
3 = not very important
4 = not at all important
8 = don't know
9 = not answered

opinion of sex before marriage: right/wrong
1 = always wrong
2 = mostly wrong
3 = sometimes wrong
4 = rarely wrong
5 = not wrong at all
8 = depends/don't know
9 = not answered

company/affection more important than sex in a marriage/relationship: agree/disa
1 = agree strongly
2 = agree
3 = neither agree nor disagree
4 = disagree
5 = disagree strongly
8 = don't know
9 = not answered

preference for frequency of sex now
1 = to have sex much more often
2 = to have sex a bit more often
3 = it is about right as it is
4 = to have sex less often
5 = to have sex much less often
9 = not answered/don't know

sexual satisfaction now
1 = always enjoys it
2 = enjoy it most of the time
3 = don't often enjoy it
4 = never enjoy it
5 = do not have sex these days
9 = not answered/don't know

how easy to talk about sex
1 = easy with a spouse/reg partner but difficult with new partnr
2 = easy with a new partner but difficult with spouse/reg partnr
3 = easy with any partner
4 = difficult with any partner
5 = depends/can't say/don't know
9 = not answered

ideal sexual lifestyle now
1 = prefer to have no sex activity
2 = no reg partners but casual partners when feel like it
3 = a few regular partners
4 = one regular partner but not living together
5 = not married but living tog with sex outside the partnership
6 = not married but living tog & no other sex partners
7 = married with sex activity outside the marriage
8 = married with no other sex partners
9 = no ideal/none of these/don't know

ideal sexual lifestyle in 5 years time
1 = prefer to have no sex activity
2 = no reg partners but casual partners when feel like it
3 = few regular partners
4 = one regular partner but not living together
5 = not married but living tog with sex outside the partnership
6 = not married but living tog & no other sex partners
7 = married with sex activity outside the marriage
8 = married with no other sex partners
9 = no ideal/none of these/don't know

changed sexual lifestyle because of concerns about hiv/aids risk
1 = yes
2 = no
3 = lifestyle has changed but not because of aids
9 = not answered

how changed lifestyle because of concern about hiv/aids risk 1
-1 = not applicable
1 = having fewer partners
2 = finding out more about the person before having sex
3 = using a condom
4 = not having sex
5 = sticking to one partner
6 = avoiding some sexual practices
7 = other change(s)
9 = not answered

hiv/aids risk: to self
1 = greatly at risk
2 = quite a lot
3 = not very much
4 = not at all at risk
8 = don't know
9 = not answered

hiv/aids risk: people who have many heterosexual partners
1 = greatly at risk
2 = quite a lot
3 = not very much
4 = not at all at risk
5 = depends on whether they use condoms/practice safe sex
8 = don't know
9 = not answered

hiv/aids risk: those who inject illegal drugs
1 = greatly at risk
2 = quite a lot
3 = not very much
4 = not at all at risk
5 = depends (e.g. on whether they share needles).
8 = don't know
9 = not answered

perception of hiv risk in usa relative to britain
1 = much more likely
2 = somewhat more likely
3 = about the same as britain
4 = somewhat less likely
5 = much less likely
8 = can't say
99 = not answered

perception of hiv risk in switzerland relative to britain
1 = much more likely
2 = somewhat more likely
3 = about the same as bbritain
4 = somewhat less likely
5 = much less likely
8 = can't say
99 = not answered

marital status at present
1 = married & living with spouse
2 = living with a partner of opposite sex as a couple
3 = living with a partner of same sex as a couple
4 = widowed
5 = divorced
6 = seperated
7 = single & never been married
9 = not answered

own/rent accomodation
1 = own outright/with mortgage or loan
2 = rent from council
3 = rent from housing association
4 = rent from private landlord
5 = tied to job (incl. rent-free)
6 = squat
7 = other
8 = shared ownership, pays part rent & part mortgage
9 = lives rent-free
99 = not answered

age when moved to present village/town/city
-1 = not applicable as always lived in present place
99 = not answered

country of birth
1 = england (incl. channel islands)
2 = wales
3 = scotland
4 = northern ireland/eire
7 = another country
9 = not answered

global region of birth
1 = europe, eu country
2 = europe, non-eu country (incl. eastern europe, russia, ...)
3 = australia/new zealand
4 = north america
5 = south america (incl. mexico)
6 = caribbean countries
7 = india, pakistan, bangladesh
8 = china (incl. hong kong and taiwan)
9 = other asia (incl. thailand, singapore, indonesia
10 = middle east & north africa
11 = west africa
12 = central and eastern africa
13 = south africa
99 = not answered

age first came to live in britain
-1 = not applicable
99 = not answered/can't remember

occupation last week 1
1 = full time education (incl. if on holiday)
2 = government training/employment scheme
3 = paid employment (incl. self-employment)
4 = waiting to take-up paid work already obtained
5 = unemployed and registered for benefit
6 = unemployed, not registered, but actively looking for a job
7 = unemployed wanting a job, but not actively looking for a job
8 = long-time sickness/disability
9 = looking after the home/family
10 = doing something else
11 = retired
99 = not answered

occupation last week 2
-1 = no other descriptions applicable
1 = full time education (incl. if on holiday)
2 = government training/employment scheme
3 = paid employment (incl. self-employment)
4 = waiting to take-up paid work already obtained
5 = unemployed and registered for benefit
6 = unemployed, not registered, but actively looking for a job
7 = unemployed wanting a job, but not actively looking for a job
8 = long-time sickness/disability
9 = looking after the home/family
10 = doing something else
11 = retired
99 = not answered

other occupation last week 1
-1 = not applicable
1 = full time education (incl. if on holiday)
2 = government training/employment scheme
3 = paid employment (incl. self-employment)
4 = waiting to take-up paid work already obtained
5 = unemployed and registered for benefit
6 = unemployed, not registered, but actively looking for a job
7 = unemployed wanting a job, but not actively looking for a job
8 = long-time sickness/disability
9 = looking after the home/family
10 = doing something else
11 = retired
12 = temporary sick/disabled
13 = early retirement
99 = not answered

highest occupation code
1 = full time education (incl. if on holiday)
2 = government training/employment scheme
3 = paid employment (incl. self-employment)
4 = waiting to take-up paid work already obtained
5 = unemployed and registered for benefit
6 = unemployed, not registered, but actively looking for a job
7 = unemployed wanting a job, but not actively looking for a job
8 = perm. unable to work because of long-time sickness/disabilit
9 = looking after the home/family
10 = doing something else
11 = retired
12 = temporarily sick/disabled
13 = early retirement
99 = not answered

hours worked per week, main job
-1 = not applicable
1 = 35 or more
2 = 10, to less than 35
3 = less than 10
9 = not answered

when last had a paid job of 10+ hours a week
-1 = not applicable
1 = never
2 = only occasional jobs (e.g. holiday/saturday jobs)
3 = within past 6 months
4 = over 6 months to 1 year ago
5 = over 1 year to 5 years ago
6 = over 5 years to 10 years ago
7 = over 10 years to 20 years ago
8 = over 20 years ago
99 = not answered/can't remember

no. of nights away with job in last year
-1 = not applicable
999 = not answered/don t know

employee/self-employed
-1 = not applicable
1 = employee
2 = self-employed
9 = not answered

manager/foreman/supervisor
-1 = not applicable
1 = manager
2 = foreman/supervisor
3 = other employee
9 = not answered

no. of employees at (last) place of work (incl. respondent)
-1 = not applicable
1 = 1 or 2
2 = 3-24
3 = 25-499
4 = 500+
9 = not answered

no. of employees respondent has/had
-1 = not applicable
1 = none
2 = 1-24
3 = 25-499
4 = 500+
9 = not answered

respondent's (major) international standard occupation code
-1 = not applicable
1 = managers & senior officials
2 = professional occupations
3 = associate professional & technical occupations
4 = administrative & secretarial occupations
5 = skilled trades occupations
6 = personal service occupations
7 = sales and customer service occupations
8 = process, plant & machine operatives
9 = elementary occupations
99 = not available/can't code occupation

respondent's socio-economic group
-1 = not applicable
1 = (1.1) employers in industry, commerce - large estabmnts
2 = (1.2) managrs in govmnt, ind, commerce -large estabmnts
3 = (2.1) employrs in industry, commerce - small estabmnts
4 = (2.2) managrs in industry, commerce - small estabmnts
5 = (3.0) professional workers - self-employed
6 = (4.0) professional workers - employees
7 = (5.1) intermed non-man workers: ancill workrs & artists
8 = (5.2) intermed non-man workers: foremen & supervisors
9 = (6.0) junior non-manual workers
10 = (7.0) personal service workers
11 = (8.0) foremen & supervisors - manual
12 = (9.0) skilled manual workers
13 = (10.0) semi-skilled manual workers
14 = (11.0) unskilled manual workers
15 = (12.0) own account workers (except professional)
16 = (13.0) farmers - employers & managers
17 = (14.0) farmers - own account
18 = (15.0) agricultural workers
19 = (16.0) members of armed forces
99 = not available

respondent's social class
-1 = not applicable
1 = (1) professional/managerial
2 = (2) managerial/technical
3 = (3.1) skilled non-manual
4 = (3.2) skilled manual
5 = (4) partly skilled
6 = (5) unskilled
7 = unclassifiable/army/other
9 = not known

who has the largest income from employment, state benefits, investments, other
-1 = not applicable
1 = respondent
2 = partner
3 = both equally
9 = not answered

partner's occupation last week 1
-1 = not applicable
1 = full time education (incl. if on holiday)
2 = government training/employment scheme
3 = paid employment (incl. self-employment)
4 = waiting to take-up paid work already obtained
5 = unemployed and registered for benefit
6 = unemployed, not registered, but actively looking for a job
7 = unemployed wanting a job, but not actively looking for a job
8 = long-time sickness/disability
9 = retired
10 = looking after the home/family
11 = doing something else
99 = not answered

partner's other occupation last week, 1
-1 = not applicable
1 = full time education (incl. if on holiday)
2 = government training/employment scheme
3 = paid employment (incl. self-employment)
4 = waiting to take-up paid work already obtained
5 = unemployed and registered for benefit
6 = unemployed, not registered, but actively looking for a job
7 = unemployed wanting a job, but not actively looking for a job
8 = long-time sickness/disability
9 = retired
10 = looking after the home/family
11 = doing something else
12 = temporary sick/disabled
13 = early retirement
99 = not answered

partner's highest occupation code
-1 = not applicable
1 = full time education (incl. if on holiday)
2 = government training/employment scheme
3 = paid employment (incl. self-employment)
4 = waiting to take-up paid work already obtained
5 = unemployed and registered for benefit
6 = unemployed, not registered, but actively looking for a job
7 = unemployed wanting a job, but not actively looking for a job
8 = long-time sickness/disability
9 = retired (only economic activity reported)
10 = looking after the hom/family
11 = doing something else
12 = temporarily sick/disabled
99 = not answered

partner ever away with job for 1+ night at a time
-1 = not applicable
1 = yes
2 = no
9 = not answered/don't know

no. of nights partner away with job in last year
-1 = not applicable
999 = not answered/don't know

partner is/was an employee or self-employed
-1 = not applicable
1 = employee
2 = self-employed
9 = not answered/don't know

partner is/was a manager/foreman/supervisor?
-1 = not applicable
1 = manager
2 = foreman/supervisor
3 = other employee
9 = not answered/don't know

no. of employees at partner's (last) place of work
-1 = not applicable
1 = 1 or 2
2 = 3-24
3 = 25-499
4 = 500+
9 = not answered/don t know

no. of employees partner has/had
-1 = not applicable
1 = none
2 = 1-24
3 = 25-499
4 = 500+
9 = not answered/don t know

respondent's partner's (major) international standard occupation code
-1 = not applicable (incl. no live-in partner)
1 = managers & senior officials
2 = professional occupations
3 = associate professional & technical occupations
4 = administrative & secretarial occupations
5 = skilled trades occupations
6 = personal service occupations
7 = sales and customer service occupations
8 = process, plant & machine operatives
9 = elementary occupations
99 = not available/can't code occupation

partner's standard industrial classification
-1 = not applicable
999 = not available

age completed continuous full-time education
96 = not yet finished
99 = not answered/can't remember

passed any exams/got any qualifications
1 = yes
2 = no, none
9 = not answered/don't know

highest academic qualification
-1 = not applicable
1 = degree level qualification
2 = a-levels
3 = as-levels
4 = slc higher grade
5 = o-level, 1975 or earlier
6 = o-level, after 1975 a-c
7 = o-level, after 1975 d-e
8 = gcse grades a-c
9 = gcse grades d-g
10 = cse grades 1, etc
11 = cse grades 2-5, etc
12 = cse ungraded'
13 = slc lower
14 = supe lower or ordinary
15 = school certificate
16 = foreign qualification
17 = other educational qualification
99 = not answered/don't know

non-academic exams passed/qualifications gained 1
-1 = no non-academic/professional qualifications
1 = teaching qualification
2 = nursing qualification
3 = hnc/hnd, etc.
4 = onc/ond, etc.
5 = city & guilds full
6 = city & guilds advanced
7 = city & guilds craft
8 = nvq level 5
9 = nvq level 4
10 = nvq level 3
11 = nvq level 2
12 = nvq level 1
13 = recognised trade apprenticeship completed
14 = clerical or commercial qualification
15 = other vocational or professional qualification
99 = not answered/don't know

non-academic exams passed/qualifications gained 2
-1 = not applicable
1 = teaching qualification
2 = nursing qualification
3 = hnc/hnd, etc.
4 = onc/ond, etc.
5 = city & guilds full
6 = city & guilds advanced
7 = city & guilds craft
8 = nvq level 5
9 = nvq level 4
10 = nvq level 3
11 = nvq level 2
12 = nvq level 1
13 = recognised trade apprenticeship completed
14 = clerical or commercial qualification
15 = other vocational or professional qualification
99 = not answered/don't know

other non-academic exams passed/qualifications gained 1
-1 = not applicable
1 = teaching qualification
2 = nursing qualification
3 = hnc/hnd, etc.
4 = onc/ond, etc.
5 = city & guilds full
6 = city & guilds advanced
7 = city & guilds craft
8 = nvq level 5
9 = nvq level 4
10 = nvq level 3
11 = nvq level 2
12 = nvq level 1
13 = recognised trade apprenticeship completed
14 = clerical or commercial qualification
15 = <not used>
16 = other vocational qualification
17 = nvq level not specified
18 = nursery nurse examination board qualification
19 = qualifications obtained through military
20 = other professional qualification
99 = not answered

year obtained most recent academic/non-academic qualification
-1 = not applicable
9999 = not answered/don't know

last school was mixed/single-sex
1 = mixed school
2 = single sex school
3 = single sex school up to 6th form but mixed 6th form
9 = not answered/can't remember

any of secondary schooling as a boarder
1 = yes
2 = no
9 = not answered/can't remember

parent's occupation when respondent was aged 16
-1 = not applicable
1 = farmer or farm manager
2 = farm worker
3 = skilled manual worker
4 = semi-skilled/unskilled manual worker
5 = professional/technical work
6 = manager/administrator
7 = clerical
8 = sales
9 = never had job/housewife/permanently sick/disabled
10 = other
11 = can't say
12 = armed forces
13 = didn't have a job at the time/in education
99 = not answered/don't know

was parent self-employed/employee
-1 = not applicable
1 = self-employed/had own business or farm
2 = worked for someone else
9 = not answered/don't know

was parent a supervisor/foreman
-1 = not applicable
1 = supervisor or foreman of manual workers
2 = supervisor or foreman of non-manual workers
3 = neither
9 = not answered/don't know

respondent's parent's social class (derived from 'par1occ' & 'par3occ')
-1 = not applicable
1 = professional/managerial
2 = managerial/technical
3 = skilled non-manual
4 = skilled manual
5 = partly skilled/unskilled
6 = never had a job
7 = unclassified/army/other
8 = can't say
9 = not answered/don't know

importance of religion and religious beliefs now
1 = very important
2 = fairly important
3 = not very important
4 = not important at all
9 = not answered

belong to any particular religion now
1 = yes
2 = no, none
9 = not answered

which religion belongs to
-1 = not applicable
1 = christian, no denomination
2 = roman catholic
3 = church of england/anglican
4 = united reformed church
5 = congregational
6 = baptist
7 = methodist
8 = presbyterian/church of scotland
9 = other christian
10 = hindu
11 = jew
12 = islam/muslim
13 = sikh
14 = buddhist
15 = other non-christian
16 = jehovahs witnesses
17 = seventh day adventist
18 = rastafarian
19 = pentecostal
99 = not answered

frequency of attendance at religious services/meetings
-1 = not applicable
1 = once a week or more
2 = less often but at least once in 2 weeks
3 = less often but at least once a month
4 = less often but at least twice a year
5 = less often but at least once a year
6 = less often
7 = never or practically never
8 = varies
9 = not answered

why respondent refused to give a urine sample
-1 = not applicable
1 = no reason for test (e.g. with present life-style)
2 = worried about confidentiality
3 = worried about effect on insurance
4 = already been tested for chlamydia
5 = on medication/health problems
6 = menstruating
7 = felt unable to pass urine
8 = did not want to know the test result
9 = no time
10 = should not be part of the survey
11 = would not participate in this kind of test
12 = too personal/embarrassed
13 = no reason given (incl. just didn't want to)
14 = other reason given
99 = not answered

urine sample provided
-1 = not applicable
1 = yes
2 = no

urine test results from lab
-8 = no test done/no result
-7 = (any other text)
-6 = lcr equivocal
-1 = not applicable
1 = no chlamydia detected
2 = chlamydia detected

chlamydia test result from urine sample
0 = no chlamydia detected
1 = chlamydia detected
9 = result unknown/not eligible for sample

weight for analysis of urine data
-9 = not answered
-8 = don't know/refusal

anyone else present in home at all during interview
1 = yes
2 = no
3 = interview conducted elsewhere (e.g. garage, car)
9 = not answered

spouse/partner present for some/all of the interview
-1 = not applicable
1 = present throughout
2 = present some of the time
3 = may have overheard all/part
4 = passing through only
5 = not present (incl. not applicable)
9 = not answered

anyone else in household look at/discuss any of casi
-1 = not applicable
1 = yes, looked at/read/completed together
2 = yes, discussed only
3 = no
4 = questionnaire not completed
9 = not answered

difficulties with interview because of language problems
1 = yes, severe
2 = yes, some
3 = no problem
9 = not answered

interviewer read out show-cards
1 = yes, most/all
2 = yes, some
3 = no
9 = not answered

interviewer's opinion of how embarrassed the respondent was
1 = very embarrassed/ill at ease
2 = somewhat embarrassed/ill at ease
3 = only slightly embarrassed/ill at ease
4 = not at all embarrassed/ill at ease
9 = not answered

interviewer's opinion of how difficult it was to persuade the respondent to part
1 = very difficult
2 = fairly difficult
3 = not very difficult
4 = not at all difficult
9 = not answered

initial willingness to participate in casi
-1 = not applicable
1 = very willing
2 = fairly willing
3 = not at all willing
9 = not answered

interviewer's perception of area-type
1 = urban/city-centre
2 = small country town centre
3 = suburban residential
4 = rural residential/village centre
5 = rural agricultural with isolated dwellings/small hamlets
9 = not answered

interviewer's perception of residential building type
1 = terraced houses
2 = semi-detached houses
3 = detached houses
4 = mixed housing
5 = low rise flats (5 storeys or less)
6 = high rise flats (blocks over 5 storeys)
7 = flats with commercial (flats/masionettes over shops)
8 = flats -mixed (high and low rise)
9 = mixed houses and flats
99 = not answered

interviewer's perception of household dwelling type
1 = whole house/bungalow: detached
2 = whole house/bungalow: semi-detached
3 = whole house/bungalow: terraced
4 = purpose built flat/masionette: basement
5 = purpose built flat/masionette: 4th floor
6 = converted flat/masionette: part-house/rooms in house
7 = dwelling with business premises
8 = caravan/houseboat
9 = other
99 = not answered

interviewer's perception of ethnic mix of type
1 = predominantly white
2 = predominantly black/brown
3 = mixed
9 = not answered

index of multiple deprivation, quintiles
1 = 1st quintile (least deprived)
2 = 2nd quintile
3 = 3rd quintile
4 = 4th quintile
5 = 5th quintile (most deprived)

ons clusters, grouped
-1 = not applicable
0 = wales/scotland
1 = rural
2 = prospering
3 = maturer
4 = urban
5 = mining and industrial
6 = inner london

respondent's age at interview, years, grouped
1 = 16-24
2 = 25-34
3 = 35-44

respondent's age at interview, years, group
1 = 16-19
2 = 20-24
3 = 25-29
4 = 30-34
5 = 35-39
6 = 40-44

current smoking status
1 = non-smoker
2 = ex-smoker
3 = light smoker
4 = heavy smoker
9 = not answered

main source of sex education was mother
0 = no
1 = yes
9 = not answered

learned about sex from mother
-1 = not applicable
0 = no
1 = yes
9 = not answered

main source of sex education, grouped
1 = mother &/or father
2 = lessons at school
3 = friends of about the same age
4 = other source
9 = not answered/can't remember

main source of sex education, grouped
1 = mother &/or father
2 = brother(s) &/or sister(s)
3 = lessons at school
4 = friend(s) of about the same age
5 = first boy/girlfriend/sexual partner
6 = doctor/nurse/clinic
7 = media
8 = other
9 = not answered/can't remember

whether needed more information at 1st sex, grouped
1 = needed more information
2 = knew enough
3 = not ready for sexual experience
9 = not answered/can't remember

known more about how girls bodies develop
0 = no
1 = yes
97 = would liked to have known more but can't specify
98 = knew enough already
99 = none, not yet ready for sexual experience
998 = can't remember
999 = not answered

type of information needed more of before 1st sex
-1 = not applicable
0 = knew enough already
1 = just biological information
2 = just risk-reduction information
3 = just psycho-sexual information
4 = biological & risk-reduction information
5 = biological & psycho-sexual information
6 = risk-reduction & psycho-sexual information
7 = more than one type of information
9 = not answered/can't remember

main preferred source of additional sex education, grouped
-1 = not applicable
0 = knew enough already
1 = mother &/or father
2 = brother(s) &/or sister(s)
3 = lessons at school
4 = friend(s) of about the same age
5 = first boy/girlfriend/sexual partner
6 = doctor/nurse/clinic
7 = media
8 = other
9 = not answered/can't remember

ease with which discussed sex with parents around age 14, grouped
-1 = not applicable
0 = not difficult with 1+ parent
1 = did not discuss with either
9 = not answered

age 1st het. sex. intercourse if aged 13+ (incl. estimates)
90 = age <13 and not since
96 = has not happened yet
97 = refusal
99 = not answered

age 1st het. sex. intercourse if aged 13+ (incl. estimates), grouped
1 = 13-15
2 = 16-17
3 = 18-19
4 = 20-24
5 = 25+
6 = has not happened yet

age at 1st het. sex. intercourse if aged 13+ (incl. estimates), grouped
1 = 13-15
2 = 16-17
3 = 18-19
4 = 20+
96 = hasn't happened yet/since age 12
99 = refused/not answered

age 1st het. sex. intercourse not limited to age 13+ (incl. estimates)
96 = has not happened yet
97 = refusal
99 = not answered

had het. sex. intercourse before age 16
0 = no
1 = yes

used condom with partner at 1st het. sex. intercourse aged 13+
-1 = not applicable
0 = no
1 = yes
8 = can't remember
9 = not answered

respondent had just met/met recently their 1st partner
-1 = not applicable
0 = no
1 = yes
9 = can't remember/not answered

used contraceptive methods in combination in last year
-1 = not applicable
1 = always used on different occasions
2 = sometimes in combination on same occasion (incl. once only)
3 = always in combination on same occasion
9 = not answered

usually use a contraceptive pill
-1 = not had sex yet/since age 12
0 = no
1 = yes
9 = not answered

summary variable: had het. sex. intercourse aged 13+
0 = no het. sex. intercourse ever/since age 13
1 = het. sex. intercourse aged 13+
9 = unclassifiable

summary variable: had hom. sex.experience ever
0 = no hom. sex. experience ever
1 = hom. sex. experience ever
9 = unclassifiable

eligible for self-completion questionnaire
1 = eligible
2 = not eligible

no. of het. sex partners, life, grouped
-1 = not applicable
0 = 0
1 = 1
2 = 2
3 = 3-4
4 = 5-9
5 = 10+
9 = not answered

no. of het. sex partners, last year, grouped
-1 = not applicable
0 = 0
1 = 1
2 = 2
3 = 3-4
4 = 5+
9 = not answered

no. of het. sex partners, last 3 months, grouped
-1 = not applicable
0 = 0
1 = 1
2 = 2+
9 = not answered

no.of hom partners, last 3 months, grouped
0 = none (incl. not eligible for self-completion)
1 = 1+ (excl. codes>=995)

1+ new hom. sex partners, last year
-1 = not applicable
0 = 0 new hom. sex partners
1 = 1+ new hom. sex partner(s)
99 = not answered

no. of new hom. sex partners, last year, grouped
-1 = not applicable
0 = 0 new hom. sex partners
1 = 1 new hom. sex partner
2 = 2+ new hom. sex partner(s)
99 = not answered

no. of het./hom. sex partners, last 5 years, grouped
-1 = not applicable
0 = 0
1 = 1
2 = 2-4
3 = 5-9
4 = 10+
9 = not answered

new sex partner(s) while outside uk, last 5 years, grouped
-1 = not applicable
0 = no
1 = yes, (all) from uk
2 = yes, 1+ new partner from a country other than uk
9 = not answered

when (last) attended a std clinic
-1 = not applicable
3 = in last year
4 = between 1 & 5 years
5 = longer than 5 years ago
9 = not answered

when (last) attended a std clinic
-1 = not applicable
1 = never
2 = in last year
3 = 1-5 years
4 = over 5 years
5 = attended but not answered when
9 = not answered

ever diagnosed with a std but can't remember which one
-1 = not applicable
0 = no
1 = can't remember which std
9 = not answered

ever diagnosed with genital herpes
-1 = not applicable
0 = no
1 = yes
9 = not answered
98 = had a std but can't remember which one

ever diagnosed with gonorrhoea
-1 = not applicable
0 = no
1 = yes
9 = not answered
98 = had std but can't remember which one

ever diagnosed with a sti (excl. thrush)
-1 = not applicable
0 = no
1 = yes
9 = not answered
97 = only sti had is thrush

ever diagnosed with a sti (excl. thrush)
-1 = not applicable
0 = no (or only sti had is thrush)
1 = yes
9 = not answered

ever diagnosed with a viral sti
-1 = not applicable
0 = no
1 = yes
9 = not answered
98 = had an sti but can't remember which one

time since (last) diagnosed with genital herpes, grouped
-1 = not applicable
0 = never
1 = in same calendar year as interview
2 = 1-5 calendar years ago
3 = >5 calendar years ago
9 = not answered

no. of stis ever diagnosed with (excl. thrush), grouped
-1 = not applicable
0 = none
1 = 1
2 = 2+
9 = not answered

no. of episodes of trichomonas, last 5 years, grouped
-1 = not applicable
0 = not had trichomonas in last 5 years/ever
1 = once
2 = more than once
9 = not answered

no. of episodes of gonorrhoea, last 5 years, grouped
-1 = not applicable
0 = not had gonorrhoea in last 5 years/ever
1 = once
2 = more than once
9 = not answered

no. of episodes of syphilis, last 5 years, grouped
-1 = not applicable
0 = not had syphilis in last 5 years/ever
1 = once
2 = more than once
9 = not answered

no. of episodes of chlamydia, last 5 years, grouped
-1 = not applicable
0 = not had chlamydia in last 5 years/ever
1 = once
2 = more than once
9 = not answered

injected prescribed drugs for psychiatric illness
-1 = not eligible
0 = no
1 = yes
9 = not answered

when was blood test for hiv (last one if more than one)
-1 = not applicable
1 = in last year
2 = 1-2 years ago
3 = >2 years ago
9 = not answered

lacked interest in having sex for 1+ month(s), last year
-1 = not eligible for self-completion/no sex problem(s)
0 = no
1 = yes
9 = not answered

problems achieving/maintaining erections for 1+ month(s), last year
-1 = not eligible for self-completion/no sex problem(s)/female
0 = no
1 = yes
9 = not answered

trouble lubricating for 1+ month(s), last year
-1 = not eligible for self-completion/no sex problem(s)/male
0 = no
1 = yes
9 = not answered

circumcised
-1 = not applicable
1 = yes
2 = no
9 = question not understood/not answered

age started menstruating, grouped
-1 = not applicable
1 = <=10 years
2 = 11-12 years
3 = 13-14 years
4 = >=15 years
9 = not answered

marital status, grouped
1 = married
2 = cohabitation, opposite sex
3 = cohabitation, same sex
4 = widowed
5 = divorced/separated
6 = single
9 = not answered

marital status, grouped
1 = married & living with spouse
2 = cohabitation (opposite sex & same sex)
3 = previously married (widowed, divorced, separated)
4 = single and never been married
9 = not answered

marital status, grouped
1 = married & living with spouse
2 = cohabitation, opposite sex
3 = cohabitation, same sex
4 = previously married (widowed, divorced, separated)
5 = single and never been married
9 = not answered

religion, grouped
1 = none
2 = christian, church of england/anglican
3 = roman catholic
4 = christian, other
5 = non-christian
9 = not answered

religion, grouped
1 = none
2 = christian, church of england/anglican
3 = roman catholic
4 = christian, other
5 = muslim
6 = hindu
7 = other non-christian
9 = not answered

ethnic group, respondent considers they belong to, grouped
1 = black
2 = white
3 = indian
4 = pakistani
5 = bangladeshi
6 = chinese
7 = other asian
8 = other
9 = not answered

country/region of birth
1 = uk
2 = ireland
3 = other europe
4 = caribbean
6 = north africa
7 = central/east africa
8 = west africa
9 = south africa
10 = india
11 = pakistan
12 = other
99 = not answered

partnership history in the last 5 years
-1 = not applicable
0 = 0 partners
1 = 1 partner (monogamous)
2 = 2+ partners (serial monogamous)
3 = 2+ partners (concurrent)
4 = 2+ partners (unknown concurrency)
9 = not answered

concurrent partnerships in the year before interview
-1 = not applicable
0 = 2+ partners (serial monogamy)
1 = 2+ partners (concurrent)
2 = 2+ partners (unknown concurrency)
9 = not answered

concurrent partnerships in last year
-1 = not applicable
0 = no
1 = yes
2 = 2+ partners but unknown concurrency
9 = not answered

average alcoholic consumption per week, grouped
0 = none
1 = low
2 = moderate
3 = high
9 = not answered

body mass index, grouped
1 = bmi <20 kg/m squared
2 = bmi 20-25 kg/m squared
3 = bmi 25 -30 kg/m squared
4 = bmi 30 -40 kg/m squared
5 = bmi >40 kg/m squared
9 = not answered

condom use for het. and/or hom. sex in last 4 weeks, grouped
-1 = not applicable
0 = not used condom on every occasion but had sex in last 4 wks
1 = used condom on every occasion of sex in last 4 weeks
9 = not answered

first live-in partnership: type of union at start of cohabitation
-1 = not applicable
1 = married
2 = living as a couple
9 = not answered

sex of first live-in partner
-1 = not applicable
1 = heterosexual
2 = homosexual
9 = not answered

reason 1 why live-in partnership 1 ended
-1 = not applicable
1 = unfaithfulness/adultery
2 = money problems
3 = difficulties with sex life
4 = different interests/nothing in common
5 = grew apart
6 = not having children
7 = lack of respect/appreciation
8 = domestic violence
9 = arguments
10 = not sharing household chores enough
11 = moved because of change in circumstances
12 = death of partner
13 = other
99 = not answered

other reason 1 why live-in partnership 1 ended
-1 = not applicable
1 = unfaithfulness/adultery
2 = money problems
3 = difficulties with sex life
4 = different interests/nothing in common
5 = grew apart
6 = not having children
7 = lack of respect/appreciation
8 = domestic violence
9 = arguments
10 = not sharing housework enough
11 = moved because of change in circumstances
12 = death of partner
13 = other
14 = drink, drugs or gambling problem
15 = mental health or related problem
16 = problem with children/step-children
17 = never at home (eg always out with friends)
18 = problems with parents/in-laws/family
19 = age-related problems (eg big difference)
20 = another relationship involved
21 = lived in/moved to a different country/area
22 = still in relationship, but stopped living together
23 = change of mind/feelings/personality
24 = partner just left without any explanation
99 = not answered

other reason 2 why live-in partnership 1 ended
-1 = not applicable
1 = unfaithfulness/adultery
2 = money problems
3 = difficulties with sex life
4 = different interests/nothing in common
5 = grew apart
6 = not having children
7 = lack of respect/appreciation
8 = domestic violence
9 = arguments
10 = not sharing household chores enough
11 = moved because of change in circumstances
12 = death of partner
13 = other
14 = drink, drugs or gambling problem
15 = mental health or related problem
16 = problem with children/step-children
17 = never at home (eg always out with friends)
18 = problems with parents/in-laws/family
19 = age-related problems (eg big difference)
20 = another relationship involved
21 = lived in/moved to a different country/area
22 = still in relationship, but stopped living together
23 = change of mind/feelings/personality
24 = partner just left without any explanation
99 = not answered

had unsafe sex in last year (2+ het. and/or hom. partners & inconsistent condom
-1 = not eligible as not had sex in last 4 wks/ever
0 = no
1 = yes
9 = not answered

1+ new het. sex partners, last year
-1 = not applicable
0 = 0 new het. sex partners
1 = 1+ new het. sex partner(s)
99 = not answered

no. of new het. sex partners, last year, grouped
-1 = not applicable
0 = 0 new het. sex partners
1 = 1 new het. sex partner
2 = 2+ new het. sex partners
99 = not answered

1+ new het./hom. sex partner(s), last year
-1 = not applicable
0 = 0 new het./hom. sex partners
1 = 1+ new het./hom. sex partner(s)
99 = not answered

new het./hom. sex partners, last year, grouped
-1 = not applicable
0 = 0 new het./hom. sex partners
1 = 1 new het./hom. sex partner
2 = 2+ new het./hom. sex partners
99 = not answered

!respondent lives in greater london (as defined by g.o.r.)
0 = elsewhere
1 = greater london

age of 1st partner (incl. estimates) if 1st het. sex. intercourse aged 13+
-1 = not applicable
97 = never knew partner's age
98 = can't remember partner's age
99 = not answered

received het. oral sex in last year
-1 = no applicable
0 = no
1 = yes
9 = not answered

parents social class, grouped
-1 = not applicable
1 = i/ii
2 = iii (manual/non-manual)
3 = iv/v
9 = not answered/don't know/unclassifiable

parents social class, grouped
-1 = not applicable
1 = i/ii/iii
2 = iv/v/unemployed
9 = not answered/don't know/unclassifiable

highest academic qualification, grouped
-1 = none
1 = degree level qualification
2 = a-levels/as-levels/slc higher grade
3 = o-level/other
4 = none
9 = not answered/don't know

left school at 16 with/without passing any exams/gaining any qualifications
-1 = not applicable
1 = left school at 16 without passing any exams/gaining quals
2 = left school at 16 having passed some exams/gained some quals
3 = left school aged 17+
9 = not answered/don't know

left school at 16 with/without passing any exams/gaining any qualifications (ver
-1 = not applicable
1 = left school at 16 without passing any exams/gaining quals
2 = left school aged 16+ with some exams/gained some quals
9 = not answered/don't know

highest academic/non-academic qualification, grouped
1 = degree
2 = higher education, <degree level but a-level/equivalent
3 = gcse, o-level or equivalent
4 = foreign or other
5 = none
9 = not answered/don't know

last school was single-sex
0 = no
1 = yes
9 = not answered/can't remember

'sexual competence' at 1st het. sex. intercourse
-1 = not applicable
0 = not competent
1 = competent
9 = not answered

age 1st hom. sex. if aged 13+
-1 = not applicable
98 = had hom. sex.with genital contact <13 & 13+ but unknown age
99 = not answered

no. of vaginal/anal het partners in last year without a condom, grouped
-1 = not applicable
0 = no unprotected vaginal/het. anal sex in last year
1 = 1 partner
2 = 2+ partners
9 = not answered

had vaginal/het. anal sex without a condom in last year, grouped
-1 = not applicable
0 = no vaginal/het. anal sex in last year
1 = yes, vaginal/het. anal sex without condom
2 = no, vaginal/het. anal sex always with condom
9 = not answered

no. of het./hom. partners without a condom, last year, grouped
0 = 0
1 = 1
2 = 2+
9 = not answered

family structure till age 16, grouped
1 = both natural parents/adopted
2 = one natural parent
3 = neither natural parent
9 = not answered

family structure till age 16, grouped
1 = both natural parents
2 = one natural parent
3 = neither natural parent (incl. adopted)
9 = not answered

source of contraceptive advice/supplies in last year, grouped
1 = clinical
2 = retail only
3 = other only
4 = none of these
5 = 1+ source (excl. clinical)
9 = not answered

age at birth of 1st child
-1 = not applicable
99 = not known

no. of occasions of het. &/or hom. sex in last 4 weeks, grouped
-1 = not applicable
0 = none
1 = 1
2 = 2
3 = 3
4 = 4
5 = 5-8
6 = 9-12
7 = 13-16
8 = 17-20
9 = 21+ times
99 = not answered

diagnosed with a bacterial sti (excl. thrush) in the 5 calendar years before int
-1 = not applicable
0 = no
1 = yes
98 = not answered when last diagnosed with a bacterial sti
99 = not answered whether ever diagnosed with a bacterial sti

diagnosed with a viral sti in the 5 calendar years before interview
-1 = not applicable
0 = no
1 = yes
98 = not answered when last diagnosed with a viral sti
99 = not answered whether ever diagnosed with a viral sti

diagnosed with a sti (excl. thrush) in the 5 calendar years before interview
-1 = not applicable
0 = no
1 = yes (excl. thrush)
98 = not answered when last diagnosed with a sti (excl. thrush)
99 = not answered whether ever diagnosed with a sti (ex. thrush)

sex 'problem' 1 lasting 1+ month(s), last year
-1 = not applicable
1 = lacked interest
2 = anxiety about sexual performance
3 = unable to experience orgasm
4 = premature orgasm
5 = physically painful intercourse
6 = problems achieving/maintaining erections
7 = trouble lubricating
9 = not answered

length of time lacked interest in sex
-1 = not applicable
1 = at least 1 month but less than 3 months
2 = at least 3 months but less than 6 months
3 = at least 6 months but less than 1 year
4 = 1 year or longer
9 = not answered

contact 1 for sexual 'problem(s)', last year
-1 = not applicable
1 = gp
2 = vd/std/sexual health clinic
3 = psychiatrist/psychologist
4 = marriage counsellor
5 = other type of clinic or doctor
6 = contacted a help-line
7 = someone else
8 = none of these
99 = not answered

nhs/private gp contacted about sexual 'problem(s)', last year
-1 = not applicable
1 = nhs
2 = private
3 = other (e.g. voluntary organisation)
4 = don't know
9 = not answered

languages spoken by the respondent 1
-1 = not applicable
1 = english
2 = gujarati
3 = hindu
4 = punjabi
5 = urdu
6 = bengali
7 = sylheti
8 = patois/creole
9 = french
10 = other
99 = not answered

other languages spoken by the respondent 1
-1 = not applicable
1 = english
2 = gujarati
3 = hindu
4 = punjabi
5 = urdu
6 = bengali
7 = sylheti
8 = patois/creole
9 = french
10 = (code not used)
11 = yoruba
12 = twi/ga
13 = swahili
14 = somali
15 = arabic
16 = other european language
17 = other african language (e.g. ibo, shona)
18 = other asian language (e.g. hinko, canton)
99 = not answered

proportion of interview in english
-1 = not applicable
1 = wholly in english
2 = partly in english, partly in another language
3 = wholly in another language

other language used for (part of) interview
-1 = not applicable
1 = punjabi
2 = urdu
9 = not answered

respondent's social class, grouped
-1 = not applicable/unclassifiable
1 = i/ii
2 = iii non-manual/iii manual
3 = iv/v
9 = not answered

respondent's social class, grouped
1 = i/ii/iii non-manual/iii manual
2 = iv/v/unemployed
9 = not answered/not applicable/unclassifiable

partner's social class, grouped
-1 = not applicable
1 = i/ii
2 = iii non-manual/iii manual
3 = iv/v
9 = not answered

contraception used at 1st het. sex. intercourse, grouped
-1 = not applicable
1 = only condom
2 = only 'other' (incl. pill)
3 = only used withdrawal
4 = only rhythm method
5 = respondent didn't use but partner may have done
6 = neither respondent nor partner used contraception
7 = used condom & pill/'other'
8 = can't remember
9 = not answered

contraception used at 1st het. sex. intercourse, grouped
-1 = not applicable
1 = used condom (poss. with other method(s))
2 = used other reliable (incl. pill) but not condom
3 = did not use reliable (withdrawal/rhythm method)
4 = respondent didn't use any, don't know about partner
9 = can't remember/not answered

(last) miscarriage or still birth
-1 = not applicable
1 = in last year
2 = between 1 and 5 years
3 = over 5 years ago
9 = not answered

own/rent accomodation
1 = own outright/with mortgage or loan
2 = rent from council
3 = rent from housing association
4 = rent from private landlord
5 = tied to job (incl. rent-free)
6 = squat
7 = other (incl. shared ownership and lives rent-free)
9 = not answered/don't know (incl. unclear)

length of time experienced any sexual 'problem(s)', last year
-1 = not applicable
0 = no sex 'problems' lasting 1+ month(s), last year
1 = at least 1 month but less than 3 months
2 = at least 3 months but less than 6 months
3 = at least 6 months but less than 1 year
4 = 1 year or longer
9 = not answered

No. of months before interview: last sex with most recent other sexuality partner
-1 = Not applicable
9999 = Not answered/can't remember date

No. of months before interview: last sex with 3rd most recent partner
-1 = Not applicable as had <3 partners in last 5 years
9999 = Not answered/can't remember date

No. of months before interview: last sex with 2nd most recent partner
-1 = Not applicable as had <2 partners in last 5 years
9999 = Not answered/can't remember date

core or ethnic minority boost sample
0 = core sample
1 = ethnic minority boost sample

strata for the core sample & ethnic minority boost sample combined
1 = inner london
2 = outer london
3 = rest of britain
4 = ethnic boost, stratum 1
5 = ethnic boost, stratum 2