Table 1. Characteristics of the study population and several subpopulations.
| All females:n(%) | Group Ia: n(%) | Group IIb: n(%) | Group IIIc: n(%) | |
|---|---|---|---|---|
| Race | ||||
| ″African American | 297 (75·0) | 209 (74·4) | 80 (83·3) | 75 (77·3) |
| ″Other | 99 (25·0) | 72 (25·6) | 16 (16·7) | 22 (22·7) |
| Age at enrolment | ||||
| ″< 17 years | 144 (36·4) | 108 (38·4) | 44 (45·8) | 47 (48·5)e* |
| ″≥ 17 years | 252 (63·6) | 173 (61·6) | 52 (54·2) | 50 (51·5) |
| Sexual partners | ||||
| ″< 2 | 297 (75·0) | 210 (74·7) | 70 (72·9) | 63 (64·9)e* |
| ″≥ 2 | 99 (25·0) | 71 (25·3) | 26 (27·1) | 34 (35·1) |
| HIV-1 infection | ||||
| ″Seropositive | 254 (64·1) | 195 (69·4) | 60 (62·5) | 58 (59·8) |
| ″Seronegative | 142 (35·9) | 86 (30·6) | 36 (37·5) | 39 (40·2) |
| Oral contraceptive in past 3 monthsd | ||||
| ″No | 219 (51·6) | 160 (57·8) | 51 (54·3) | 56 (59·0) |
| ″Yes | 168 (43·4) | 117 (42·2) | 43 (45·7) | 39 (41·1) |
| Genital wartsd | ||||
| ″No | 292 (80·2) | 204 (78·2) | 77 (89·5) | 73 (84·9) |
| ″Yes | 72 (19·8) | 57 (21·8) | 9 (10·5) | 13 (15·1) |
| Prior chlamydial infectiond | ||||
| ″No | 232 (63·7) | 157 (60·1) | 49 (57·0) | 47 (54·6) |
| ″Yes | 132 (36·3) | 104 (39·9) | 37 (43·0) | 39 (45·4) |
| Gonorrhoead | ||||
| ″No | 281 (77·2) | 194 (74·3) | 61 (70·9) | 65 (75·6) |
| ″Yes | 83 (22·8) | 67 (25·7) | 25 (29·1) | 21 (24·4) |
| Bacterial vaginosisd | ||||
| ″No | 277 (76·1) | 196 (75·1) | 65 (75·6) | 68 (79·1) |
| ″Yes | 87 (23·9) | 65 (24·9) | 21 (24·4) | 18 (20·9) |
| CD4+ T cells count (cells/µl)d | ||||
| ″< 400 | 83 (21·5) | 58 (21·1) | 10 (10·8)e* | 9 (9·5)e** |
| ″≥ 400 | 304 (78·6) | 217 (78·9) | 83 (89·2) | 86 (90·5) |
a
Subjects with at least four visits of endocervical cytokine data available (Group I).
b
Subjects who acquired Chlamydia trachomatis within two consecutive visits (C. trachomatis negative visit followed immediately by C. trachomatis positive visit).
c
Subjects cleared C. trachomatis infection within two consecutive visits (C. trachomatis positive visit followed immediately by C. trachomatis negative visit).
d
Few subjects had missing information.
e
P < 0·05 (*) or P < 0·01 (**) compared with all subjects.