Baseline characteristics and HIV/STI re-testing within 9 months in SMS and comparison groups
| Baseline characteristics | SMS group (N=714) | Comparison group (N=1084) | p Value* |
| n (%) | n (%) | ||
| Client status | <0.001 | ||
| New | 426 (59.7) | 452 (41.7) | |
| Existing | 288 (40.3) | 632 (58.3) | |
| Age group (y) | <0.001 | ||
| <25 | 137 (19.2) | 135 (12.5) | |
| 25–29 | 216 (30.3) | 238 (22.0) | |
| 30–39 | 236 (33.1) | 406 (37.5) | |
| 40+ | 125 (17.5) | 305 (28.1) | |
| NSW area of residence | 0.635 | ||
| Metropolitan | 695 (97.3) | 1051 (97.0) | |
| Non-metro | 19 (2.7) | 33 (3.0) | |
| Country of birth | 0.081 | ||
| Australia | 327 (45.8) | 542 (50.0) | |
| Other | 387 (54.2) | 542 (50.0) | |
| Number of sex partners in the last 3 months | <0.001 | ||
| <5 | 531 (74.4) | 721 (66.5) | |
| 5 or more | 183 (25.6) | 363 (33.5) | |
| Condom use with anal sex in the last 3 months | 0.175 | ||
| Inconsistent | 362 (50.7) | 585 (54.0) | |
| Always | 352 (49.3) | 499 (46.0) | |
| Ano-genital symptoms | 0.040 | ||
| Yes | 122 (17.1) | 147 (13.6) | |
| No | 592 (82.9) | 937 (86.4) | |
| STI diagnosis | |||
| Chlamydia urogenital | 29 (4.1) | 11 (1.0) | <0.001 |
| Chlamydia rectal | 68 (9.5) | 10 (0.9) | <0.001 |
| Gonorrhoea urogenital | 10 (1.4) | 16 (1.5) | 0.897 |
| Gonorrhoea rectal | 18 (2.5) | 15 (1.4) | 0.085 |
| Infectious syphilis | 36 (5.0) | 8 (0.7) | <0.001 |
| Reason for presentation | <0.001 | ||
| STI testing | 499 (69.9) | 589 (54.3) | |
| HIV post-exposure prophylaxis | 28 (3.9) | 22 (2.0) | |
| Contact with a STI case | 63 (8.8) | 66 (6.1) | |
| HIV testing | 51 (7.1) | 73 (6.7) | |
| Hepatitis B testing/vaccination | 3 (0.4) | 3 (0.3) | |
| Other | 70 (9.8) | 283 (26.1) | |
| HIV/STI re-testing rate | Adjusted OR, 95% CI† | ||
| Re-tested for HIV/STIs within 9 months of baseline | 714 (64.4) | 1084 (29.7) | 4.4 (3.5 to 5.5) |