Table 3.22. Relative risks for coronary heart disease (CHD) among women, by time since smoking cessation, case-control studies

StudyPopulationType of CHDNumber of controlsSource of controlsNumber of casesSmoking statusRelative risk (95% confidence interval)
Thompson et al. 1989 Women physicians
Aged 45-69 years
United Kingdom
275 definite, 84 possible myocardial infarctions718British women physiciansNR * Never smoked1.0
NRCurrent smokers2.6 **
NRFormer smokers1.1 **
Cessation for:
NR1-2 years1.9 **
NR3-5 years1.6 **
NR6-10 years1.2 **
NR11-15 years0.95 **
NR>15 years0.7 **
Dobson et al. 1991a Women
Aged 35-69 years
Australia
Nonfatal myocardial infarction and fatal CHD1,031Participants in community survey of risk factor prevalence174Never smoked1.0
127Current smokers4.7 (3.4-6.6)
86Former smokers1.5 (1.1-2.2)
Cessation for:
15<6 months3.2 (1.2-9.2)
76-<12 months10.0 (2.1-47.1)
191-3 years2.9 (1.2-6.7)
94-6 years1.3 (0.5-3.4)
97-9 years1.3 (0.5-3.2)
710-12 years1.7 (0.6-4.9)
19>12 years0.7 (0.4-1.4)
Negri et al. 1994 Women
Aged 24-74 years
Italy
Acute myocardial infarction130Hospital patients115§ Never smoked1.0
Current smokers5.8 **
Former smokers
Cessation for:
1-5 years2.5 **
>5 years0.7 **
*

NR = Value not specified in report of study.

**

95% confidence interval was not reported.

§

There were 115 cases altogether; number was not split by type of smoker or by years of smoking cessation.

From: Chapter 3. Health Consequences of Tobacco Use Among Women

Cover of Women and Smoking
Women and Smoking: A Report of the Surgeon General.
Office on Smoking and Health (US).

NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.