Table 3.
Variable | N, unweighted (weighted) |
Prevalence (95% CI) | OR (95% CI) | P | AOR (95% CI) | P | ||
Sociodemographics | ||||||||
|
Age (years) | <.001 | — | |||||
|
|
16-24 | 1361 (994) | 7.7% (6.3-9.4) | 1 | — | ||
|
|
25-34 | 1451 (1299) | 4.93% (3.90-6.23) | 0.62 (0.45-0.86) | — | ||
|
|
35-44 | 784 (1383) | 1.84% (1.12-3.02) | 0.22 (0.13-0.39) | — | ||
|
Ethnic group | .007 | .004 | |||||
|
|
White | 3134 (3118) | 4.01% (3.39-4.75) | 1 | 1 | ||
|
|
Asian/Asian British | 190 (270) | 6.9% (4.0-11.6) | 1.77 (0.98-3.21) | 2.11 (1.16-3.84) |
|
|
|
|
Black/black British | 126 (140) | 7.8% (3.7-15.4) | 2.01 (0.92-4.42) | 2.11 (0.93-4.81) |
|
|
|
|
Mixed/Chinese/other | 108 (110) | 9.4% (5.1-16.8) | 2.49 (1.26-4.93) | 2.2 (1.13-4.26) |
|
|
|
Education level b | <.001 | <.001 | |||||
|
|
No academic qualifications | 252 (275) | 0.8% (0.3-2.5) | 0.60 (0.18-2.00) | 0.65 (0.20-2.18) | ||
|
|
Academic qualifications typically gained at age 16 | 880 (912) | 1.4% (0.8-2.3) | 1 | 1 |
|
|
|
|
Studying for/attained further academic qualifications | 2354 (2419) | 6.05% (5.13-7.13) | 4.57 (2.68-7.78) | 3.79 (2.20-6.51) |
|
|
|
Socioeconomic status c | <.001 | .001 | |||||
|
|
Managerial/professional | 1060 (1262) | 4.53% (3.42-5.98) | 1.46 (0.97-2.19) | 1.93 (1.27-2.93) |
|
|
|
|
Intermediate | 509 (554) | 3.0% (1.8-4.8) | 0.94 (0.53-1.66) | 1.16 (0.64-2.08) |
|
|
|
|
Semiroutine/routine | 1321 (1300) | 3.15% (2.40-4.11) | 1 | 1 |
|
|
|
|
No job | 122 (99) | 1.6% (0.4-6.4) | 0.48 (0.11-2.08) | 0.33 (0.08-1.42) |
|
|
|
|
Full-time student | 574 (452) | 11.1% (8.5-14.5) | 3.85 (2.53-5.86) | 1.95 (1.14-3.34) | ||
Internet access | ||||||||
|
Access to Internet at home |
|
.02 | .02 | ||||
|
|
Yes | 3327 (3442) | 4.73% (4.06-5.51) | 1 |
|
1 |
|
|
|
No | 267 (232) | 1.5% (0.6-3.9) | 0.30 (0.11-0.82) |
|
0.31 (0.11-0.84) | |
Area-level measures |
|
|||||||
|
Deprivation d | .51 | .24 | |||||
|
|
1 (least deprived) | 642 (658) | 5.7% (4.2-7.7) | 1 | 1 |
|
|
|
|
2 | 653 (699) | 4.3% (3.1-6.0) | 0.74 (0.46-1.20) | 0.71 (0.44-1.14) |
|
|
|
|
3 | 690 (720) | 4.6% (3.3-6.5) | 0.81 (0.50-1.30) | 0.76 (0.47-1.23) |
|
|
|
|
4 | 774 (823) | 4.3% (2.9-6.4) | 0.75 (0.45-1.26) | 0.69 (0.41-1.15) |
|
|
|
|
5 (most deprived) | 837 (776) | 3.8% (2.7-5.3) | 0.66 (0.41-1.06) | 0.58 (0.36-0.93) |
|
|
|
Output Area Classification 2011 | <.001 | <.001 | |||||
|
|
1: “Rural residents” | 276 (294) | 3.2% (1.8-5.6) | 1 |
|
1 | |
|
|
2: “Cosmopolitans” | 302 (329) | 12.5% (9.0-17.2) | 4.33 (2.17-8.63) |
|
3.38 (1.68-6.77) |
|
|
|
3: “Ethnicity central” | 181 (225) | 5.4% (2.7-10.3) | 1.71 (0.69-4.27) |
|
1.58 (0.64-3.91) |
|
|
|
4: “Multicultural metropolitans” | 516 (595) | 3.7% (2.3-5.7) | 1.15 (0.54-2.43) |
|
1.04 (0.49-2.22) |
|
|
|
5: “Urbanites” | 665 (667) | 3.6% (2.4-5.3) | 1.13 (0.55-2.30) |
|
1.09 (0.53-2.24) |
|
|
|
6: “Suburbanites” | 587 (597) | 4.5% (3.2-6.3) | 1.44 (0.72-2.85) |
|
1.30 (0.65-2.59) |
|
|
|
7: “Constrained city dwellers” | 331 (271) | 4.1% (2.3-7.1) | 1.28 (0.56-2.94) |
|
1.06 (0.46-2.48) | |
|
|
8: “Hard-pressed living” | 738 (698) | 2.8% (2.0-4.0) | 0.87 (0.44-1.75) |
|
0.76 (0.38-1.52) | |
Sexual behavior, last year | ||||||||
|
Number of sexual partners | .77 | .29 | |||||
|
|
0 | 191 (174) | 4.6% (2.4-8.6) | 1.06 (0.53-2.12) | 0.95 (0.48-1.89) |
|
|
|
|
1 | 2320 (2612) | 4.37% (3.63-5.26) | 1 | 1 |
|
|
|
|
2+ | 1051 (857) | 5.0% (3.7-6.6) | 1.14 (0.80-1.63) | 0.72 (0.48-1.08) | ||
|
≥1 new sexual partners | <.001 | .11 | |||||
|
|
No | 2129 (2503) | 3.34% (2.71-4.12) | 1 |
|
1 | |
|
|
Yes | 1428 (1134) | 7.14% (5.74-8.85) | 2.22 (1.61-3.07) |
|
1.39 (0.93-2.09) |
|
|
Number of sexual partners without a condom | .12 | .30 | |||||
|
|
0 | 862 (780) | 5.9% (4.4-7.8) | 1 | 1 |
|
|
|
|
1 | 2139 (2412) | 4.15% (3.40-5.05) | 0.69 (0.48-0.98) | 0.96 (0.66-1.38) |
|
|
|
|
≥2 | 523 (419) | 4.5% (3.1-6.7) | 0.75 (0.46-1.25) | 0.69 (0.42-1.13) |
|
|
|
Seeking sexual partners online | .004 | .009 | |||||
|
|
No | 3287 (3414) | 4.28% (3.64-5.03) | 1 |
|
1 | |
|
|
Yes | 306 (257) | 7.9% (5.4-11.6) | 1.92 (1.24-3.00) |
|
1.80 (1.16-2.79) |
|
Sexual behavior, last 5 years | ||||||||
|
Number of sexual partners | .04 | .96 | |||||
|
|
0-1 | 1441 (1805) | 3.63% (2.82-4.66) | 1 | 1 |
|
|
|
|
2-4 | 1106 (1012) | 5.17% (3.98-6.70) | 1.45 (0.99-2.13) | 0.94 (0.63-1.41) |
|
|
|
|
≥5 | 1024 (837) | 5.8% (4.4-7.6) | 1.64 (1.11-2.42) | 0.95 (0.60-1.49) |
|
|
|
≥1 same-sex partners | .002 | .008 | |||||
|
|
No | 3459 (3561) | 4.32% (3.68-5.06) | 1 | 1 | ||
|
|
Yes | 137 (116) | 10.9% (6.2-18.5) | 2.71 (1.43-5.14) | 2.44 (1.27-4.70) |
|
|
Sexual health care use and STI | ||||||||
|
Non-Internet sexual health care or advice/help, last year e |
|
.004 | .42 | ||||
|
|
Yes | 2391 (2223) | 5.46% (4.57-6.51) | 1 |
|
1 | |
|
|
Not reported | 1205 (1453) | 3.10% (2.24-4.28) | 0.55 (0.37-0.82) |
|
0.84 (0.55-1.29) |
|
|
Attended STI clinic, last 5 years |
|
.03 |
|
.89 | |||
|
|
Yes | 861 (712) | 5.9% (4.5-7.8) | 1 | 1 |
|
|
|
|
No | 2670 (2902) | 4.11% (3.41-4.95) | 0.68 (0.48-0.97) | 0.97 (0.67-1.41) |
|
|
|
STI service use, last year f | .27 | .08 | |||||
|
|
Yes | 873 (703) | 5.3% (3.9-7.0) | 1 | 1 |
|
|
|
|
Not reported | 2723 (2974) | 4.35% (3.64-5.19) | 0.82 (0.57-1.17) | 1.40 (0.96-2.02) |
|
|
|
STI g diagnosis, last 5 years | .68 | .97 | |||||
|
|
No | 3300 (3408) | 4.47% (3.81-5.24) | 1 | 1 |
|
|
|
|
Yes | 257 (225) | 5.0% (2.9-8.5) | 1.13 (0.63-2.04) | 0.99 (0.55-1.79) |
|
a Unweighted N=3614, weighted N=3697. Denominators vary due to item nonresponse.
b Denominator restricted to those aged 17 and older. No academic qualifications: left school at age 16 without passing any exams/gaining any qualifications (excludes qualifications gained at an older age); academic qualifications typically gained at age 16: left school at 16 having passed some exams/gained some qualifications (eg, English General Certificate of Secondary Education [GCSE] or equivalent); studying for or attained further academic qualifications: left school at age 17 or older.
c Based on National Statistics Socioeconomic Classification (NS-SEC) code. No job: no job of ≥10 hours per week in the last 10 years.
d Quintile of adjusted Index of Multiple Deprivation for Great Britain.
e Defined as reporting STI clinic attendance within the last year or responses other than “Internet” for questions listed in Table 1 within the last year. Exceptions (non-Internet responses which were ignored) were (1) where participants had indicated friend, parent/relative, or partner as sources of contraceptive supplies (free-text response) and (2) where participants had selected “family member/friend,” “self-help books/information leaflets,” “self-help groups,” and “have not sought any help” as sources of advice/help about their sex life.
f Defined as reporting any of: STI clinic attendance, chlamydia testing, or HIV testing within this last year.
g Natsal definition of STIs excludes thrush.