Table 1.

ORs for the association between persistenta (n = 76) and transientb (n = 55) detection of incident, type-specific HPV infections and selected characteristics

Crude OR (95% CI)No. persistent/ no. transient
Site of incident detection (n = 125c)
 Cervix only1.001/8
 Vulva/vagina only10.78 (1.20–96.67)31/23
 Both cervix and vulva/vagina15.62 (1.89–129.25)41/21
HPV risk group
 Low- or undetermined-risk1.0031/24
 High-risk1.12 (0.51–2.48)45/31
Number of concurrent HPV types detectedd
 01.0018/14
 ≥11.10 (0.47–2.60)58/41
Current smokerd
 No1.0068/53
 Yes3.12 (0.37–26.37)8/2
Currently using hormonal contraceptivesd
 No1.0035/17
 Yes0.52 (0.24–1.16)41/38
Last reported vaginal intercoursed (n = 127e)
 >2 days before testing1.0017/16
 ≤2 days before testing0.72 (0.31–1.69)56/38
Sex partner(s) in the prior 8 monthsd
 No sex partners1.001/3
 Non-new sex partners only2.25 (0.16–31.11)9/12
 ≥1 new sex partner(s)4.95 (0.41–60.15)66/40
Total no. of sex acts in the prior 8 monthsd (n = 123)f
 01.001/3
 1–164.69 (0.39–55.96)25/16
 17–414.80 (0.35–65.64)24/15
 42+3.16 (0.24–41.89)20/19
No. of condom-unprotected sex acts in the prior 8 monthsd (n = 119)fg
 01.009/6
 1–61.19 (0.39–3.67)25/14
 7–251.47 (0.35–6.10)22/10
 26+0.43 (0.12–1.57)13/20
Sex partner(s) after incident infectionh
 No sex partners1.0015/14
 Non-new sex partners only1.14 (0.47–2.74)39/32
 ≥1 new sex partner(s)2.28 (0.82–6.38)22/9
Total no. of sex acts after incident infectionh
 01.0015/14
 1–111.44 (0.54–3.79)20/13
 12–271.87 (0.70–4.95)24/12
 28+0.99 (0.32–3.05)17/16
No. of condom-unprotected sex acts with a nonnew partner after incident infectionh (n = 102)i
 01.0018/12
 1–82.00 (0.52–7.63)18/6
 9–220.73 (0.21–2.49)12/11
 23+0.73 (0.25–2.08)13/12
  • aPersistent detections included all incident, type-specific positives that were followed by 2 consecutive type-specific positives (+++).

  • bTransient detections included all incident, type-specific positives that were followed by 2 consecutive type-specific negatives (+−−).

  • cSix infections that were first detected in the self-collected sample only were excluded.

  • dAt time of incident detection.

  • eFour infections were detected in women who reported vaginal intercourse on the day of HPV testing. Because data on time of vaginal intercourse was not collected, it was not possible to determine whether vaginal intercourse occurred before or after testing. Therefore, those 4 infections were excluded.

  • fEight infections detected in women who both enrolled less than 8 months prior to incident detection and reported their first vaginal intercourse more than 2 weeks prior to enrollment were excluded because complete sexual histories for the 8 months prior to incident detection were not available.

  • gFour infections that were first detected in women reporting no vaginal intercourse in the past 8 months were excluded.

  • hIn the time interval between incident detection and the subsequent 4-month visit.

  • iTwenty-nine infections that were first detected in women reporting no vaginal intercourse in the time interval between incident detection and the subsequent 4-month visit were excluded.