Hazard ratios and 95% confidence intervals for risk of death by BMI category.

aModels use attained age as the underlying time metric and were adjusted for sex and study.bModels use attained age as the underlying time metric, and are adjusted for sex, race/ethnicity (white [all participants in the Swedish and Australian cohorts were coded as white], black, Asian/Pacific Islander, Hispanic, other/unknown), education (high school or less, post–high school, college, unknown), alcohol intake (grams of ethanol per day: 0, >0 to cUsing BMI = 40.0–44.9 kg/m2 as the reference group.模型a以已达年龄作为核心时间度量指标，并校正了性别与研究相关因素。模型b同样以已达年龄作为核心时间度量指标，校正的协变量包括性别、种族/族裔（其中白人：瑞典与澳大利亚队列的所有参与者均被编码为白人；其余类别涵盖黑人、亚洲/太平洋岛民、西班牙裔、其他/未知）、教育水平（分为高中及以下、高中后、大学、未知）、酒精摄入量（以每日乙醇克数计：0g、>0g至c），并以身体质量指数（BMI，Body Mass Index）40.0~44.9 kg/m²作为参照组。