Fig. 1

Flowchart of HPV 16 positive women follow-up in Shanxi Province Cervical Cancer Screening I (SPOCCS I) study, China, 1999–2014. HC2 Hybrid Capture 2, LBC liquid-based cytology, VIA visual inspection with acetic acid, CIN cervical intraepithelial neoplasia, CIN2+ CIN grade 2 or worse, CIN3+ CIN grade 3 or worse, AC analytic cohort, FU follow up