Table 3. Hazard ratios of body mass index and smoking for all-cause mortality.

Variables	Men			Women
	Number of subjects	Number of deceased	Hazard ratios (95%C.I.)	Number of subjects	Number of deceased	Hazard ratios (95%C.I.)
Age (10 year interval)			2.22 (1.96-2.53)			2.34 (1.97-2.79)
Body Mass Index
BMI < 20	1139	130	1.78 (1.38-2.29)	1539	73	1.92 (1.35-2.72)
20≦BMI < 22	1815	141	1.35 (1.06-1.73)	2263	63	1.22 (0.85-1.76)
22≦BMI < 24	2052	116	1.00 (reference)	2285	55	1.00 (reference)
24≦BMI < 26	1417	68	0.91 (0.67-1.22)	1594	51	1.26 (0.86-1.84)
26≦BMI	878	47	1.11 (0.79-1.56)	1144	45	1.56 (1.05-2.31)
Smoking
Never-smokers	1604	72	1.00 (reference)	7711	221	1.00 (reference)
Ex-smokers	1653	123	1.35 (1.01-1.81)	240	12	1.38 (0.77-2.47)
Current smokers
< 20 cigarettes/day	1239	121	1.61 (1.20-2.16)	541	36	2.07 (1.45-2.95)
≧ 20 cigarettes/day	2805	186	1.44 (1.10-1.90)	233	18	2.02 (1.25-3.26)

Adjusted for variables in this table.

C.I.=Confidence interval