Odds ratios (95% confidence interval) of IBS prevalence in staple foods consumption.^a

Notes: Model 1, adjusted for age (continuous variable), sex, and body mass index (continuous variable); Model 2, adjusted for Model 1 + smoking status (never, former, current), drinking frequency (never, sometimes, every day), occupation (desk work), educational levels (≥college), sleep duration (6–8 hours/day), physical activity (≥23 metabolic equivalent hours/week), and depressive symptoms (self-rating depression scale ≥45 points); Model 3, adjusted for Model 2 + fat intake (continuous variable); Model 4, adjusted for Model 2 + carbohydrate intake (continuous variable); Model 5, adjusted for Model 2 + plant protein intake (continuous variable); Model 6, adjusted for Model 2 + soluble fiber intake (continuous variable); Model 7, adjusted for Model 2 + insoluble fiber intake (continuous variable). a Analyzed by logistic regression analysis. Odds ratios (95% confidence interval) of IBS prevalence in staple foods consumption.a