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Occupational Medicine 1985;35:111-113
© 1985 Society of Occupational Medicine

research-article

The Effects of Cigarette Smoking Cessation on 5-year Pulmonary Function Changes in US Underground Coal Miners

RICHARD G. AMES1, and DAVID S. HALL2

1 Appalachian Laboratory for Occupational Safety and Health Morgantown, West Virginia, USA
2 Department of Community Medicine, West Virginia University Morgantown, West Virginia, USA

A 5-year prospective study of cigarette smoking cessation was performed using 1300 US underground coal miners who were studied in 1977 and re-studied in 1982 as part of an ongoing National Institute for Occupational Safety and Health (NIOSH) project. Five-year changes in the spirometry-based measures of pulmonary function were analysed separately for Western and Eastern white male miners using least-squares means models which allowed adjustment for the biological variables of age and height and also for occupational exposure to coal mine dust. Western and Eastern miners were analysed separately because Eastern miners experienced much greater average pulmonary function declines than Western miners. Smoking status was statistically related to the decline in forced expiratory volume in 1 second (FEV1) in Western miners. Miners reporting smoking cessation showed a rebounding of values compared with declines for continuing smokers and lifetime non-smokers. This rebounding of FEV1 among workers whose occupational exposures are known to reduce pulmonary function (coal mine dust) is discussed from the perspective of smoking cessation programmes.

Requests for reprints should be addressed to: Dr Richard G. Ames, Appalachian Laboratory for Occupational Safety and Health, Morgantown, WV 26505, USA.


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