Table 3 HPV incident and clearance cases and rates per 100 person-years and RR according to different women's characteristics
Baseline Characteristics | Incidence | Clearance | ||||||
|---|---|---|---|---|---|---|---|---|
| Â | Distribution women (%) | Person years | Rate per 100 p. yrs | RR (95% CI)a | Distribution women (%) | Person years | Rate per 100 p. yrs | RR (95% CI)a |
Age (yrs) at study entry | ||||||||
21 -- 24 | 78 (50.3) | 115 | 25.3 | 1 (ref.) | 145 (47.4) | 72 | 9.8 | 1 (ref.) |
18 -- 20 | 62 (40.0) | 92 | 32.6 | 1.2 (0.7 -- 2.0) | 128 (41.8) | 64 | 7.8 | 0.7 (0.5-1.0) |
12 -- 17 | 15 (9.7) | 19 | 53.3 | 2.2 (1.0 -- 4.5) | 33 (10.8) | 16 | 0 | 0.9 (0.5-1.5) |
Lifetime number of sexual partners | ||||||||
1 | 47 (30.3) | 66 | 30.1 | 1 (ref.) | 73 (23.9) | 36 | 8.3 | 1 (ref.) |
2 | 45 (29.0) | 78 | 26.8 | 0.8 (0.4 -- 1.5) | 91 (29.7) | 45 | 11.1 | 0.9 (0.6-1.5) |
3 | 36 (23.2) | 46 | 36.8 | 1.5 (0.8 -- 2.9) | 73 (23.9) | 36 | 2.7 | 0.9 (0.5-1.4) |
4 or more | 27 (17.4) | 34 | 32 | 1.1 (0.5 -- 2.3) | 69 (22.5) | 34 | 8.7 | 1.0 (0.6-1.6) |
HIV status | ||||||||
Negative | 148 (95.5) | 212 | 29.7 | 1 (ref.) | 272 (88.9) | 135 | 8.9 | 1 (ref.) |
Positive | 4 (2.6) | 6 | 65 | 2.8 (0.9 -- 8.3) | 20 (6.5) | 10 | 0 | 0.3 (0.1-0.8) |
Unknown | 3 (1.9) | 7 | 27.2 | - | 14 (4.6) | 7 | 0 | - |
Multiplicity of HPV types b | ||||||||
No infection | -- | -- | -- | -- | 28 (9.2) | 14 | 14.5 | 1 (ref.) |
Single | -- | -- | -- | -- | 108 (35.3) | 54 | 5.6 | 0.5 (0.3-1.0) |
2 or more types | -- | -- | -- | -- | 170 (55.6) | 841 | 8.3 | 0.6 (0.4-1.2) |