Fig. 1

The associations of dietary nutrient intake with the risk of cervical intraepithelial neoplasia, grade 1 cervical intraepithelial neoplasia and grade 2 cervical intraepithelial neoplasia and higher among 2304 women. The vertical lines signify the odds ratios and 95% confidence intervals obtained in the multivariate logistic regression analysis after adjustment for age at the baseline, years of education, income, smoking status, age at menarche, menopause, HPV infection, intrauterine device use, years of intrauterine use, squamous junction status, vaginal pH, sexual activity during menstruation, and history of gynecologic surgery and vaginitis. The horizontal lines denote the quartiles of dietary nutrient intake for dietary folate, dietary vitamin B1, dietary vitamin B2, dietary vitamin B6, dietary vitamin C, dietary vitamin E, dietary vitamin K, dietary niacin, and dietary fiber