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© 1995 Oxford University Press

research-article

Chronic Bronchitis and the Type of Cigarette Smoked

ANA M B MENEZES*, CESAR G VICTORA** and MARIO RIGATTO{dagger}

* Department of Clinical Medicine, Universidade Federal de Pelotas Pelotas, RS, Brazil
**Department of Social Medicine, Universidade Federal de Pelotas Pelotas, RS, Brazil
{dagger} Department of Clinical Medicine, Universidade Federal do Rio Grande do Sul RS, Brazil

Reprint requests. Dr A M B Menezes, Av. Duque de Caxias, 250 - 96030-000 - Pelotas, RS, Brazil.

Background. Smoking is a well known primary nsk factor for chronic bronchitis. However, little is known about the relationship between different types of cigarettes smoked and chronic bronchitis.

Objective. To determine the association between chronic bronchitis and the type of cigarette smoked.

Methods. A cross-sectional prevalence study was conducted in an urban area (Pelotas) of Southern Brazil. A total of 1053 subjects aged >40 years were interviewed about respiratory symptoms and some risk factors for chronic bronchitis.

Results. After adjustment for confounding factors, the number of daily cigarettes smoked was strongly associated with the risk of chronic bronchitis (odds ratio [OR] = 8.10, 95% CI: 4.46–14.71 for smokers of >20 cigarettes per day compared to non-smokers). Among smokers, maize leaf cigarettes showed the highest risk (OR = 5 43 compared to non-smokers, 95% CI: 2.65–11.13) and filter cigarettes the lowest (OR = 2.19, 95% CI: 1 19–4.03).

Conclusions. In addition to the number of cigarettes smoked, the use of maize leaf cigarettes was shown to have an Important Independent association with chronic bronchitis.

Received 1 July 1994


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