Variable | Total sample characteristics | Outcome: STI diagnosis in follow-up period |
n % (column) | n % (row) | |
Demographic | ||
Age (years) | ||
25+ (max. 80) | 1739 (59.2) | 119 (6.8) |
15–24 | 1201 (40.9) | 121 (10.1) |
Gender | ||
Male | 975 (33.2) | 92 (9.4) |
Female | 1965 (66.8) | 148 (7.5) |
IMD quintile | ||
1 (higher deprivation) | 1211 (41.4) | 121 (10.0) |
2 | 839 (28.6) | 75 (8.9) |
3 | 501 (17.1) | 33 (0.4) |
4 | 249 (8.5) | 7 (0.3) |
5 (lower deprivation) | 129 (4.4) | 4 (0.7) |
Ethnic group | ||
White British/Irish | 1052 (35.8) | 49 (4.7) |
White other | 381 (13.0) | 23 (6.0) |
Black African | 324 (11.0) | 29 (9.0) |
Black Caribbean | 484 (16.5) | 79 (16.3) |
Black other | 35 (1.2) | 6 (17.1) |
Mixed/other | 376 (12.8) | 38 (10.1) |
Asian | 288 (9.8) | 16 (5.6) |
Degree-level education | ||
No | 1493 (51.3) | 160 (10.7) |
Yes | 1420 (48.8) | 79 (5.6) |
Currently employed | ||
No | 801 (27.4) | 76 (9.5) |
Yes | 2120 (72.6) | 164 (7.7) |
Behavioural and attitudinal | ||
Contraception use in p12m (self or partner) | ||
Any barrier method | 1793 (62.4) | 143 (8.0) |
Permanent/LARC/hormonal (without barrier) | 636 (22.1) | 48 (7.6) |
Emergency/natural/no method only | 446 (15.5) | 40 (9.0) |
Early sexual debut (<16 years of age) | ||
No | 1272 (43.3) | 128 (10.1) |
Yes | 1668 (56.7) | 112 (6.7) |
Self-perceived risk | ||
Don't think I'm at risk of getting any STI | 1348 (54.2) | 133 (9.9) |
Think I'm at risk of getting STIs | 1139 (45.8) | 72 (6.3) |
Attitudes to concurrency | ||
Negative attitude | 2517 (90.6) | 181 (7.2) |
Positive attitude | 262 (9.4) | 38 (14.5) |
Number of partners in p12m | ||
1 | 1072 (37.1) | 56 (5.2) |
2–4 | 1212 (41.9) | 95 (7.8) |
5 or more | 609 (21.1) | 84 (13.8) |
Number of new partners in p12m | ||
None | 871 (30.4) | 51 (5.9) |
1 | 754 (26.3) | 60 (8.0) |
2–4 | 849 (29.6) | 72 (8.5) |
5 or more | 396 (13.8) | 49 (12.4) |
Partner concurrency in p12m | ||
No | 1944 (69.9) | 124 (6.4) |
Yes | 837 (30.1) | 95 (11.4) |
Age mixing with any of most recent three partners | ||
No | 1648 (63.6) | 133 (8.1) |
Yes | 942 (36.4) | 81 (8.6) |
Ethnic mixing with any of most recent three partners | ||
No | 1249 (47.7) | 81 (6.5) |
Yes | 1369 (52.3) | 136 (9.9) |
Current partnership type | ||
Married/committed only | 1350 (46.4) | 80 (5.9) |
Casual only | 934 (32.1) | 97 (10.4) |
Both | 97 (3.3) | 14 (14.4) |
Don't have partner | 527 (18.1) | 46 (8.7) |
Clinical* | ||
Time since last STI diagnosis | ||
Never | 2306 (78.4) | 117 (5.1) |
At survey attendance | 454 (15.4) | 91 (20.0) |
Within the 6 months before survey | 106 (3.6) | 16 (15.1) |
Within the 7–12 months before survey | 74 (2.5) | 16 (21.6) |
Types of STI previously diagnosed | ||
None | 2306 (78.4) | 117 (5.1) |
CT only | 282 (9.6) | 36 (12.8) |
Any other STI (including or excluding CT) | 352 (12.0) | 87 (24.7) |
Number of previous STI episodes | ||
None | 2306 (78.4) | 117 (5.1) |
1 at survey only | 376 (12.8) | 62 (16.5) |
1 episode in p12m (±1 at survey) | 230 (7.8) | 48 (20.9) |
≥2 episodes in p12m (±1 at survey) | 28 (1.0) | 13 (46.4) |
Missing data: IMD (11), degree-level education (27), current employment (19), contraception use (65), self-perceived risk (453), attitudes to concurrency (161), number of partners in p12m (47), number of new partners in p12m (70), partner concurrency in p12m (159), age mixing (350), ethnic mixing (322) and current partnership type (32).
*The time frame for clinical data was the survey attendance (±6 weeks) and the p12m.
IMD, Index of Multiple Deprivation; LARC, long-acting reversible contraception; p12m, previous 12 months.