RESPIRATORY-FUNCTION IN VINEYARD AND ORCHARD WORKERS

A group of 174 male vineyard and orchard workers was studied for the p revalence of acute and chronic respiratory symptoms and lung function changes. rn addition, 115 male control workers were studied for the pr evalence of chronic respiratory symptoms. There was a significantly hi gher prevalence of dyspnea and chest tightness in exposed compared to control workers. In particular exposed nonsmokers had significantly hi gher prevalences of dyspnea and chest tightness than controls; this wa s found for exposed nonsmokers with both short (less than or equal to 10 years) and long (>10 years) exposure. Smokers exposed for more than IO years had significantly higher prevalences of chronic cough, chron ic phlegm, chronic bronchitis, and chest tightness than smokers with s horter exposures (p < 0.01 or p < 0.05). Workers employed for more tha n 10 years had higher prevalences of most of the acute (shift-related) symptoms than those workers with shorter employment; however the diff erences were significantly only for cough in smokers (p < 0.05). Signi ficantly lower than predicted FVC values were measured in smokers and nonsmokers after both short and long duration of employ ment. Differen ces between measured and predicted FEV(1), FEF(50), and FEF(25) were s ignificant for workers employed for more than 10 years. A separate ana lysis of individual data as a percent of predicted values demonstrated that many workers had FVC(5.2%), FEV(1) (6.3%), FEF(50) (27.6%), and FEF(25) (40.2%) lower than 70% of predicted values. These data suggest that vineyard and orchard workers may develop acute and chronic respi ratory symptoms and lung function changes which are, in part, related to environmental factors and to cigarette consumption. (C) 1997 Wiley- Liss, Inc.