Characteristics of 8050 HIV-negative women recruited into three cervical cancer screening studies in Khayelitsha, South Africa.

Note: * = p-value of trend, STD = sexually transmitted disease, WNL = within normal limits, CIN 1 = cervical intraepithelial neoplasia grade 1, CIN 2 = cervical intraepithelial neoplasia grade 2, CIN 3 = cervical intraepithelial neoplasia grade 3, HPV = Human papillomavirus, HC2 = Hybrid capture 2, Older cohort (aged 35–65 years) = Cohorts 1 and 2 combined, Younger cohort (aged 17–34 years) = Cohort 3, Pearson’s chi-square test and Student’s T-test were used to examine differences between the older and younger cohorts.