Baseline demographic and sexual behaviour characteristics
| Percentages are of group total unless specified | Control group (%) | Intervention group (%) |
|---|---|---|
| Gender | ||
| Male | 31/101 (30.69) | 29/99 (29.29) |
| Female | 70/101 (69.31) | 70/99 (70.71) |
| Age | ||
| Mean (SD) | 20.60 (2.39) | 20.39 (2.42) |
| 16–19 years | 33/101 (32.67) | 36/99 (36.36) |
| 20–24 years | 68/101 (67.33) | 63/99 (63.64) |
| Ethnicity | ||
| White | 55/101 (54.46) | 59/99 (59.60) |
| Black | 32/101 (31.68) | 21/99 (21.21) |
| Asian | 0/101 (0.0) | 2/99 (2.0) |
| Chinese | 0/101 (0.0) | 0/99 (0.0) |
| Other | 14/101 (13.86) | 17/99 (17.17) |
| Refused/missing | 0/101 (0.0) | 0/99 (0.0) |
| Sexual orientation | ||
| Heterosexual | 83/101 (82.18) | 88/99 (88.89) |
| Gay or lesbian | 5/101 (4.95) | 3/99 (3.03) |
| Bisexual | 10/101 (9.90) | 5/99 (5.05) |
| Refused/missing | 3/101 (2.97) | 3/99 (3.03) |
| STI infection at baseline | ||
| No infection | 53/101 (52.48) | 58/99 (58.59) |
| Chlamydia-positive | 42/101 (41.58) | 35/99 (35.35) |
| Gonorrhoea/NSU | 5/101 (4.95) | 5/99 (5.05) |
| Chlamydia/gonorrhoea/ NSU diagnosis | 1/101 (0.99) | 1/99 (1.01) |
| Sexual behaviour | ||
| Condom use at last sex | 35/101 (34.65) | 32/99 (32.32) |
| Condom use at last sex with someone new | 52/101 (51.49) | 48/99 (48.48) |
| Testing prior to last sex with someone new | 37/101 (36.63) | 32/99 (32.32) |
| Partner testing at last sex with someone new* | 12/101 (11.88) | 11/99 (11.11) |
| Number of sexual partners in last 12 months | ||
| 0 | 0/101 (0.0) | 0/99 (0.0) |
| 1 | 9/101 (8.91) | 6/99 (6.06) |
| 2+ | 92/101 (91.09) | 93/99 (93.94) |
*Participants were asked “The last time you had sex with someone new, did they get tested for sexually transmitted infections before you had sex?”.