Abstract
Results of epidemiological cross-sectional studies of chronic non-specific lung diseases (CNSLD) in the Netherlands suggest that the exogenous factors smoking and atmospheric pollution have an effect on chronic production of phlegm.
These factors seemed to have no effect on bronchial obstruction, except in one subgroup of men, in whom there was a relationship between the exogenous factors and the prevalence of dyspnoea, although no relationship was found between these factors and impairment of FEV1. The implications of the findings are discussed.
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References
Van der Lende, R.: Epidemiology of Chronic Non-Specific Lung Disease. Royal VanGorcum, Assen (the Netherlands) 1969
Minette, A., Brille, D., Casula, D., Van der Lende, R., Smidt, U.: Commentaires relatifs au questionnaire pour l'étude de la bronchite chronique et de l'emphysème pulmonaire. Ceca, Luxembourg 1967
MRC (1966) Medical Research Council's Committee on Research into Chronic Bronchitis: Instructions for the use of the questionnaire on respiratory symptoms. Memor. med. Res. Coun. (Lond.)
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van der Lende, R., Visser, B.F., Wever-Hess, J. et al. Epidemiological investigations in the Netherlands into the influence of smoking and atmospheric pollution or respiratory symptoms and lung function disturbances. Pneumonologie 149, 119–126 (1973). https://doi.org/10.1007/BF02151747
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DOI: https://doi.org/10.1007/BF02151747