Fig. 3

The risk of all-cause mortality in the highest frequency of nut consumption stratified by covariates. Hazard ratio (HR) and 95% confidence interval (CI) for all-cause mortality and p for interaction were determined using Cox proportional hazard regression analysis after adjustment for sex, age, BMI, household income (< 2 million won, 2–4 million won, ≥ 4 million won), education (≤ middle school, ≤ high school, ≥ college), alcohol drinking (never, past, or current drinker), smoking (never, past, or current smoker), physical activity (no or yes), energy intake, and history of diabetes, cardiovascular disease, hypertension, or metabolic syndrome. The dots show HRs and the line ranges show 95% CIs. BMI, body mass index