Fig. 2

Subgroup analyses by potential confounders including age (< 65 years vs. ≥ 65 years), sex (male vs. female), race (White, Non-Hispanic vs. Other), body mass index at the time of enrollment (< 25 kg/m² vs. ≥ 25 kg/m²), education (≤ high school vs. ≥ some college), smoking status (never vs. former vs. current), and drinking status (never vs. former vs. current). The HRs (95% CIs) of per SD increment in the total fiber intake were calculated and showed. HRs hazard ratios; CIs confidence intervals; SD standard deviation