Figure 2.

The prevalence of frailty by baseline characteristics

The prevalence of frailty was adjusted for age, sex, and study area, except for prevalence by age groups (panel A), which was not adjusted for any variable. Former smokers who had stopped smoking because of illness were classified as current smokers. We report the p values for trend by age, education level, tobacco smoked among daily smoker, pure alcohol consumed among daily drinker, and physical activity. MET-h=metabolic equivalent of task-hours.