Table 2. All-cause, cardiovascular and non-cardiovascular mortality in relation to cigarette smoking.

	Never smoking	Former smoking				Current smoking			P-value†	P-value‡
		All	Remote	Recent		All	Light-to- moderate	Heavy
In multiple Cox regression, the adjusted variables included age, body mass index, pulse rate, alcohol intake, serum total cholesterol and triglycerides, fasting plasma glucose and the prevalence of hypertension and diabetes mellitus at baseline. †Refers to P-value for trend from never to former and to current smoking. ‡Refers to P-value for trend from never smoking to remote and recent former smoking, and to light-to-moderate and heavy current smoking.
Number of participants	311	334	201	133		923	783	140
Number of person-years	2127	2297	1410	886		6568	5586	982
All-cause mortality
Number of deaths	53	77	42	35		137	115	22
Rate per 1000 person-years	24.9	33.5	29.8	39.5		20.9	20.6	22.4
Age-adjusted HR (95% CI)	1	1.29 (0.91–1.83)	1.09 (0.72–1.63)	1.69 (1.10–2.59)		1.24 (0.90–1.72)	1.17 (0.84–1.63)	2.25 (1.33–3.80)	0.25	0.06
Multivariate-adjusted HR (95% CI)	1	1.20 (0.84–1.72)	0.99 (0.65–1.50)	1.62 (1.04–2.52)		1.19 (0.85–1.68)	1.11 (0.79–1.58)	2.30 (1.34–4.07)	0.36	0.08
Cardiovascular mortality
Number of deaths	30	28	15	13		48	45	3
Rate per 1000 person-years	14.1	12.2	10.6	14.7		7.3	8.1	3.1
Age-adjusted HR (95% CI)	1	0.87 (0.52–1.45)	0.70 (0.38–1.30)	1.19 (0.62–2.30)		0.87 (0.55–1.39)	0.89 (0.55–1.42)	0.71 (0.21–2.42)	0.60	0.78
Multivariate-adjusted HR (95% CI)	1	0.72 (0.42–1.23)	0.57 (0.30–1.09)	1.04 (0.52–2.10)		0.78 (0.48–1.29)	0.79 (0.48–1.31)	0.68 (0.19–2.44)	0.38	0.59
Non-cardiovascular mortality
Number of deaths	23	49	27	22		89	70	19
Rate per 1000 person-years	10.8	21.3	19.1	24.8		13.6	12.5	19.3
Age-adjusted HR (95% CI)	1	1.85 (1.13–3.04)	1.59 (0.91–2.77)	2.35 (1.31–4.21)		1.71 (1.07–2.72)	1.54 (0.96–2.48)	3.72 (1.96–7.06)	0.06	0.01
Multivariate-adjusted HR (95% CI)	1	1.90 (1.12–3.07)	1.54 (0.87–2.73)	2.40 (1.32–4.37)		1.71 (1.05–2.78)	1.52 (0.93–2.51)	3.98 (2.03–7.83)	0.06	0.01