Prevalence of ever smoking, ever obesity, and the presence of either risk factor among adults aged 50–59 in the U.S. National Health and Nutrition Examination Survey. Ever smoked is having smoked at least 100 cigarettes in lifetime based on respondent reports. Ever obese is ever having a BMI≥30 kg/m2 ascertained from a question asking about maximum lifetime body weight (excluding pregnancy). Prevalence of either risk factor is having reported ever smoking or having ever been obese.
Data Source: Author analysis of U.S. National Health and Nutrition Examination Survey II (1976–1980), III (1988–1994), and 1999–2010.