(AUD <$20,000, $20,000–$39,999, $40,000–$69,999, ≥$70,000); region of residence (major cities, inner regional areas, outer regional/remote areas); alcohol consumption (0, 1–14, ≥15 alcoholic drinks/week), and body mass index (BMI) (<20, 20–24.99, 25–29.99, ≥30 kg/m2). Missing values for covariates other than smoking status were included in the models as separate categories. Hypertension and dyslipidaemia were considered likely to be part of the causal pathway between smoking and mortality and were not adjusted for. Sensitivity analyses were conducted: i) adjusting additionally for physical activity; and ii) categorising current smokers as those who reported being current smokers at baseline and past smokers who had ceased smoking 3 or fewer years prior to baseline.
