Improving the estimation of the burden of risk factors: an illustrative comparison of methods to measure smoking-attributable mortality

Table 1 Characteristics of study population - CCHS 4.1 (2009), Ontario, age 20 years+

Sex	Smoking status	Population count (n)	Prevalence (%)	All-cause mortality hazard ratios*
Males	Heavy current smoker	389 364	8.4	2.8 (2.4, 3.2)
	Light current smoker	802 080	17.3	2.2 (1.9, 2.5)
	Former smokers	1 273 064	27.5	1.4 (1.3, 1.5)
	Never smokers	2 168 608	46.8	Reference
	Total	4 633 116	100
Females	Heavy current smoker	182 738	3.8	2.9 (2.6, 3.4)
	Light current smoker	701 209	14.4	2.2 (2.0, 2.5)
	Former smokers	974 084	20.0	1.7 (1.5, 1.8)
	Never smokers	3 012 968	61.9	Reference
	Total	4 870 999	100

*Hazard ratios calculated from model derived using Canadian Community Health Survey (CCHS) cycles 1.1-3.1, adjusting for physical inactivity, unhealthy eating, stress, alcohol, and other covariates. Hazard ratios are followed by 95% confidence intervals in brackets.

ISSN: 1478-7954