Association Between Reductions of Number of Cigarettes Smoked per Day and Mortality Among Older Adults in the United States.

ABSTRACT: Many smokers do not quit but instead reduce the number of cigarettes they smoke per day (CPD) over their lifetime. Yet the associations of such changes in CPD with health risks are unclear. We examined the association of changes in CPD with subsequent death in the period 2004-2011 among 253,947 participants of the National Institutes of Health-AARP Diet and Health Study. Using a questionnaire assessing responders' history of smoking cigarettes, we identified cigarette smokers who quit, decreased, maintained, or increased their CPD between ages 25-29 and 50-59 years. Hazard ratios and 95% confidence intervals were obtained from multivariable adjusted Cox proportional hazards regression models. Relative to never smokers, smokers who maintained a consistent CPD had 2.93 times (95% confidence

SUBMITTER: Inoue-Choi M 

PROVIDER: S-EPMC6357806 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature