New cheaper human papilloma virus mass screening strategy reduces cervical cancer incidence in Changsha city: A clinical trial

Figure 5 Cervical lesion distribution in the first and second rounds of screening, and statistical analysis of human papillomavirus 16/18 features. A: The stacked bar charts show the carcinogenesis in the first screening; B: The stacked bar charts show the carcinogenesis in the second screening; C: The stacked bar charts compare the carcinogenesis of the human papillomavirus 16/18-positive women in the two-screening population. AIS: Adenocarcinoma in situ; HPV: Human papillomavirus; CIN: Cervical intraepithelial neoplasia.