Sensitivity analysis for coarseness of age adjustment: Hazard ratio estimates (95% CI) for all-cause mortality among healthy participants.

Excludes those who ever smoked at baseline, those with a history of cardiovascular disease at baseline (defined as self-reported heart disease, stroke or blood clot on the baseline questionnaire), those with a history of cancer at baseline (defined as self-reported history of cancer other than melanoma and skin cancer on the baseline questionnaire) and the first two years of follow up. Model 1: Follow up time is the underlying time variable, age adjusted for as categorical variable in 5-year groups. Model 2: Follow up time is the underlying time variable, age adjusted for as continuous variable. Model 3: Age adjusted for as the underlying time variable.