Table 3. Hazard ratio of smoking on all-cause death, cardiac death, and non-cardiac death; univariate and multivariate analysis.

		Univariate analysis			Multivariate analysis
	Age (years)	Smoking	HRa (95% CI)	p-value	Smoking	HRa (95% CI)	p-value
All-cause death	Total	Ex	1.29 (1.24–1.35)	< .001	Ex	1.15 (1.11–1.20)	< .001
		Current	1.61 (1.57–1.65)	< .001	Current	1.64 (1.59–1.69)	< .001
	40	Ex	1.25 (1.10–1.42)	0.001	Ex	0.92 (0.80–1.05)	0.216
		Current	2.22 (2.06–2.39)	< .001	Current	1.50 (1.37–1.64)	< .001
	50	Ex	1.53 (1.39–1.69)	< .001	Ex	1.03 (0.93–1.14)	0.610
		Current	2.78 (2.62–2.94)	< .001	Current	1.70 (1.59–1.82)	< .001
	60	Ex	1.82 (1.70–1.95)	< .001	Ex	1.24 (1.16–1.34)	< .001
		Current	2.53 (2.42–2.65)	< .001	Current	1.65 (1.57–1.73)	< .001
	70	Ex	1.61 (1.51–1.72)	< .001	Ex	1.19 (1.11–1.27)	< .001
		Current	1.96 (1.87–2.06)	< .001	Current	1.43 (1.36–1.51)	< .001
	80	Ex	1.37 (1.15–1.64)	0.001	Ex	1.11 (0.92–1.34)	0.287
		Current	1.55 (1.33–1.81)	< .001	Current	1.29 (1.10–1.52)	0.002
Cardiac death	Total	Ex	0.98 (0.89–1.08)	0.686	Ex	1.03 (0.93–1.14)	0.552
		Current	1.28 (1.21–1.35)	< .001	Current	1.65 (1.55–1.77)	< .001
	40	Ex	1.41 (1.01–1.98)	0.043	Ex	0.91 (0.64–1.30)	0.616
		Current	2.79 (2.30–3.39)	< .001	Current	1.82 (1.45–2.28)	< .001
	50	Ex	1.25 (0.96–1.63)	0.094	Ex	0.85 (0.65–1.12)	0.225
		Current	2.68 (2.32–3.10)	< .001	Current	1.76 (1.48–2.08)	< .001
	60	Ex	1.35 (1.15–1.59)	< .001	Ex	1.07 (0.90–1.27)	0.432
		Current	2.14 (1.94–2.36)	< .001	Current	1.65 (1.47–1.85)	< .001
	70	Ex	1.21 (1.05–1.39)	0.010	Ex	1.09 (0.94–1.26)	0.272
		Current	1.51 (1.37–1.67)	< .001	Current	1.37 (1.22–1.53)	< .001
	80	Ex	1.04 (0.70–1.53)	0.857	Ex	0.89 (0.59–1.35)	0.593
		Current	1.06 (0.75–1.49)	0.754	Current	0.96 (0.67–1.38)	0.822
Non-cardiac death	Total	Ex	1.39 (1.33–1.45)	< .001	Ex	1.18 (1.13–1.24)	< .001
		Current	1.70 (1.66–1.75)	< .001	Current	1.63 (1.58–1.68)	< .001
	40	Ex	1.23 (1.07–1.41)	0.004	Ex	0.92 (0.79–1.07)	0.264
		Current	2.13 (1.97–2.31)	< .001	Current	1.45 (1.31–1.59)	< .001
	50	Ex	1.59 (1.43–1.76)	< .001	Ex	1.06 (0.95–1.19)	0.291
		Current	2.80 (2.63–2.98)	< .001	Current	1.69 (1.57–1.82)	< .001
	60	Ex	1.95 (1.81–2.10)	< .001	Ex	1.29 (1.19–1.39)	< .001
		Current	2.64 (2.52–2.77)	< .001	Current	1.65 (1.56–1.74)	< .001
	70	Ex	1.77 (1.64–1.91)	< .001	Ex	1.22 (1.12–1.32)	< .001
		Current	2.14 (2.02–2.26)	< .001	Current	1.44 (1.36–1.53)	< .001
	80	Ex	1.50 (1.23–1.84)	< .001	Ex	1.18 (0.95–1.46)	0.127
		Current	1.74 (1.46–2.06)	< .001	Current	1.40 (1.17–1.69)	< .001

HR; hazard ratio, CI; confidence interval, Ex; ex-smoker, current; current smoker

^a Hazard ratio of various outcomes according to smoking status compared to never smoker.