Fig. 1

Log odds ratio for CIN 3 + in coinfection of HPV 16 (A) or HPV 18 (B) and other HPV genotypes. The analyses took single HPV 16 or HPV 18 infection as a reference, respectively. The vertical solid line represents the null log odds ratio of 0.HPV, human papillomavirus; CIN 3+, cervical intraepithelial neoplasia grade 3 or more severe diagnoses