Fig. 4. Progression time from CIN2 to CIN3 based on findings by senior colposcopists. The Kaplan-Meier curve shows the survival time from baseline (time of CIN2 diagnosis) to the time of CIN3 diagnosis. Baseline: time of CIN2 diagnosis; Event: time of the first CIN3 diagnosis; Survival time: time from baseline to event (n=179).

CI, confidence interval; CIN, cervical intraepithelial neoplasia.