Unadjusted and adjusted estimates of detection of other STIs on HPV incidence (total number of visit pairs=3221)
| Number of visit pairs N=3221 | Incident detection at current visit | Unadjusted OR† (95% CI) | Adjusted OR† (95% CI) | |
| Diagnosis of the following at previous visit | N (col %) | New cases of any HPV, n= 241(7.5%) n (row%) | New detection of any HPV type across consecutive visits | |
| STIs other than HPV infection* | ||||
| No | 3158 (98.0) | 230 (7.3) | 1.0 | 1.0 |
| Yes | 63 (2.0) | 11 (17.5) | 2.46 (1.31 to 4.62) | 2.16 (1.08 to 4.34) |
| New cases of any HR-HPV, n=110 (3.4%) n (row%) | New detection of any HR- HPV type across consecutive visits | |||
| STIs other than HPV infection* | ||||
| No | 3158 (98.0) | 105 (3.3) | 1.0 | 1.0 |
| Yes | 63 (2.0) | 5 (7.9) | 2.42 (0.93 to 6.27) | 2.01 (0.74 to 5.48) |
* STIs other than HPV infection included the following: laboratory diagnoses of genital chlamydia, gonorrhoea, syphilis, as well as clinical diagnoses of genital herpes or trichomoniasis.
† Estimates adjusted for age and study site at enrolment, as well as the following covariates assessed at each follow-up visit: pap smear diagnosis at previous visit, contraceptive use in last 6 months, number of lifetime partners, partners having sex with others in last 6 months, having new partner in last 12 months, male partner using condom in last 6 months, number of partners in last 6 months.
HPV, human papillomavirus; HR-HPV, High-risk HPV, defined as HPV types 16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59, 66 (IARC 2007); STIs, sexually transmitted infections.