Hazard ratios (HR)and 95% confidence intervals (CI) between sedentary behaviors and physical activity and lung cancer risk among never smokers, NIH-AARP Diet and Health Study (1995–2006).

1Adjusted for age, current body mass index, education, ethnicity, vigorous activity, alcohol consumption, total caloric intake.2Adjusted for age, current body mass index, education, ethnicity, alcohol consumption, total caloric intake.Within each stratum, the category of most active subjects served as the reference group.