Cross-sectional association of baseline BMI with the mental and physical SF-12 summary scores, stratified by BMI category.

Abbreviations: BMI = body mass index, CI = confidence intervals, SF = Short Form.1Stratified regression coefficients are reported only with significant interaction terms in the basic model (P2β can be interpreted as difference in SF-12 summary score per increase in baseline BMI of 1 kg/m2.3Basic model included the SF-12 summary score at baseline as the dependent variable and baseline BMI, age, sex, and smoking status at baseline as independent variables, n = 6726.4Further adjusted model consisting of the basic model additionally adjusted for education level, employment status, living situation, diagnosis of diabetes and hypertension, and history of myocardial infarction, stroke, coronary artery bypass grafting, and percutaneous coronary intervention at baseline, n = 6682.5Normal weight (BMI 18.5 to 2), overweight (BMI 25 to 2), and obese (BMI ≥30 kg/m2).