Table 2

Multivariate adjusted hazard ratios^2-150 for all cause and cause specific mortality during 1964–89 among those who quit between 1959–84 compared with continuous smokers

Cause of death	No of deaths		Hazard ratio (95% CI)	p value
	Quit 1959–84	Continuous smokers
All cause	181	462	0.71 (0.50 to 1.00)	0.049
Cardiovascular disease	88	256	0.60 (0.37 to 0.98)	0.043
Cancer	45	128	0.58 (0.30 to 1.12)	0.105
Lung cancer	13	72	0.50 (0.14 to 1.77)	0.281
Other cancer	32	56	0.62 (0.28 to 1.33)	0.220
Respiratory diseases^2-151	22	24	2.51 (0.65 to 9.70)	0.181
Other causes	26	54	0.91 (0.38 to 2.18)	0.833

↵2-150 From Cox's proportional, time dependent hazards regression model adjusted for age, baseline pulmonary function, baseline amount of smoking, body mass index, diastolic blood pressure, and total cholesterol. Continuous smokers as a reference group.
↵2-151 Number of deaths among those who quit and continuous smokers from COPD =12 and 10, from pneumonia = 7 and 11, and from other causes = 3 and 3, respectively.