Fig. 1
From: Dietary fiber intake and risk of gallstone: a case–control study
Multivariate odds ratios of total fiber intake tertiles for risk of gallstone according to risk factor status at baseline (multivariate logistic regression models for estimating ORs and 95% CIs, multivariable models were adjusted for sex, age, energy intake, BMI, physical activity, smoking, alcohol, except for the respective stratifying factor). Data are reported as OR (95% CI). A, BMI < 25 vs 25–30 and ≥ 30 (P = 0.119 for interaction); B, age < 50 years vs ≥ 50 years (P = 0.711 for interaction); C, sex male vs female (P = 0.017 for interaction). Ref indicates reference group