Fig 1. Hazard ratios of ischemic heart disease according to BMI and FBG levels.

*95% confidence interval of hazard ratio does not include the reference value (1.00). HRs of IHD were adjusted for age, income level, meal type, smoking status, alcohol consumption, and physical activity (all categorical variables). A group of BMI<25 kg/m² and FBG<100 mg/dL was set as reference and colored as a pattern in the bar graph. Abbreviations: HR, hazard ratio; BMI, body mass index (kg/m²); FBG, fasting blood glucose (mg/dL).