STIs* disclosed at initial visit: characteristics and clinical variables of 412 female victims attending the Sexual Assault Centre within 1 week of the assault by presence of STI, crude and age adjusted OR with corresponding 95% CI presented
| STI* present | |||||
|---|---|---|---|---|---|
| Variable | Number (%) | Yes, n=35 n (%) | No, n=377 n (%) | Crude OR (95% CI) | Age† adjusted OR (95% CI) |
| Age groups (year), n=412 | |||||
| 12–15 | 54 (13) | 2 (6) | 52 (14) | 0.7 (0.1 to 3.4) | |
| 16–19 | 117 (28) | 20 (57) | 97 (26) | 3.7 (1.5 to 9.0) | |
| 20–24 | 131 (32) | 7 (20) | 124 (33) | Reference | |
| 25–29 | 39 (10) | 3 (9) | 36 (10) | 1.5 (0.4 to 6.0) | |
| ≥30 | 71 (17) | 3 (9) | 68 (18) | 0.8 (0.2 to 3.1) | |
| Occupation, n=397 | |||||
| Employed | 99 (25) | 6 (18) | 93 (26) | Reference | Reference |
| Student | 217 (55) | 21 (62) | 196 (54) | 1.7 (0.6 to 4.3) | 1.1 (0.4 to 3.0) |
| Unemployed | 81 (20) | 7 (21) | 74 (20) | 1.5 (0.5 to 4.6) | 1.6 (0.5 to 5.2) |
| Country of origin, n=409 | |||||
| Norwegian/Western | 389 (95) | 31 (91) | 358 (96) | Reference | Reference |
| Non-Western | 20 (5) | 3 (9) | 17 (5) | 2.0 (0.6 to 7.3) | 3.0 (0.8 to 11.8) |
| Substance abuse, n=408 | |||||
| No | 366 (90) | 28 (82) | 338 (90) | Reference | Reference |
| Yes | 42 (10) | 6 (18) | 36 (10) | 2.0 (0.8 to 5.2) | 3.6 (1.2 to 10.5) |
| Prior coital experience, n=387 | |||||
| No | 31 (8) | 1 (3) | 30 (9) | Reference | Reference |
| Yes | 356 (92) | 32 (97) | 324 (92) | 3.0 (0.4 to 22.5) | 3.5 (0.4 to 28.0) |
| Time since last consensual coitus (week), n=291 | |||||
| ≤2 | 150 (52) | 14 (50) | 136 (52) | Reference | Reference |
| >2 | 141 (49) | 14 (50) | 127 (48) | 1.1 (0.5 to 2.3) | 1.1 (0.5 to 2.4) |
| Prior pregnancy, n=352 | |||||
| No | 224 (64) | 21 (70) | 203 (63) | Reference | Reference |
| Yes | 128 (36) | 9 (30) | 119 (37) | 0.7 (0.3 to 1.6) | 1.3 (0.5 to 3.5) |
| Non-barrier contraceptives‡, n=394 | |||||
| No | 232 (56) | 24 (69) | 208 (58) | 1.6 (0.8 to 3.3) | 1.6 (0.7 to 3.4) |
| Yes | 162 (39) | 11 (31) | 151 (42) | Reference | Reference |
| Assailant origin, n=326 | |||||
| Norwegian/Western | 245 (75) | 16 (57) | 229 (77) | Reference | Reference |
| Non-Western | 81 (25) | 12 (43) | 69 (23) | 2.5 (1.1 to 5.5) | 2.9 (1.3 to 6.7) |
| Anogenital injury, n=399 | |||||
| None | 303 (76) | 31 (89) | 272 (75) | 2.6 (0.9 to 7.6) | 2.4 (0.8 to 7.2) |
| Yes | 96 (24) | 4 (11) | 92 (25) | Reference | Reference |
| Spermatozoa detected, n=312 | |||||
| No | 236 (76) | 20 (74) | 216 (76) | Reference | Reference |
| Yes | 76 (24) | 7 (26) | 69 (24) | 1.1 (0.4 to 2.7) | 1.1 (0.4 to 2.8) |
| Genital examination with speculum, n=378 | |||||
| Genital speculum examination | 366 (97) | 31 (91) | 335 (97) | Reference | Reference |
| Genital inspection only | 12 (3) | 3 (9) | 9 (3) | 3.6 (0.9 to 14.0) | 2.8 (0.7 to 11.4) |
| Time from assault to examination§, n=412 | |||||
| <72 h | 381 (93) | 31 (89) | 350 (93) | Reference | Reference |
| ≥72 h | 31 (8) | 4 (11) | 27 (7) | 1.7 (0.6 to 5.1) | 2.2 (0.7 to 7.1) |
*Positive test at initial visit for at least one of the microbes Chlamydia trachomatis, Mycoplasma genitalium, Neisseria gonorrhoeae, Trichomonas vaginalis, and/or HSV, and/or clinically diagnosed anogenital warts.
†Patient age as a 5-categorical variable.
‡One hundred and two patients (25%) used combined hormonal contraceptives, 22 patients (5.3%) used progestagen injections/implants, 21 patients (5.1%) were fitted with an intrauterine device, and 17 patients (4.1%) had undergone tubal ligation/hysterectomy or were postmenopausal.
§Median interval from assault to clinical examination was 11.5 h (mean 23.5 h, range 1.1–165 h).
HSV, herpes simplex virus; STI, sexually transmitted infection.