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).

1

Adjusted for age, current body mass index, education, ethnicity, vigorous activity, alcohol consumption, total caloric intake.

2

Adjusted 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.