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American Journal of Epidemiology Vol. 119, No. 1: 33-43
Copyright © 1984 by The Johns Hopkins University School of Hygiene and Public Health

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COTTON DUST AND SMOKING EFFECTS ON LUNG FUNCTION IN COTTON TEXTILE WORKERS

GERALD J. BECK1,1, LUCINDA R. MAUNDER2 and E. NEIL SCHACHTER2

1Department of Epidemiology and Public Health, Yale University School of Medicine, 60 College St., P.O. Box 3333, New Haven, CT 06510. (Reprint requests to Dr. Beck.)
2Department of Internal Medicine, Yale University School of Medicine, New Haven, CT

1Reprint requests to Dr. Beck

Beck, G. J. (Dept. of Epidemiology and Public Health, Yale U. School of Medicine, New Haven, CT 06510), L. R. Maunder and E. Nell Schachter. Cotton dust and smoking effects on lung function In cotton textile workers. Am J Epidemiol 1984;119:33–43.

Both smoking and exposure to cotton textile dust have been associated with the development of chronic obstructive lung disease. The relative Importance of these two effects are examined in this paper. This investigation is based on a cross-sectional study of white active and retired cotton textile workers 45 years and older seen in 1973 in Columbia, South Carolina with an average of 35 years worked in the mills. A questionnaire was completed and an expiratory flow volume curve obtained for each worker studied. Standard pulmonary function parameters including the forced vital capacity (FVC), the forced expired volume in one second (FEV), and the maximum expiratory flow at 50% (MEF50%), and at 25% (MEF25%) were recorded. White residents 45 years and older from three communities studied from 1972 to 1974 were used as controls. A two-way analysis of variance examined both the effects of cotton dust and smoking on lung function. Both exposures significantly influenced lung function and were found to be additive and often equally important. When one effect was more important than the other, it was in FVC and FEV1 for cotton dust and in MEF50%and MEF25%for smoking.

airway obstruction; cotton; lung; smoking


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