LEVELS OF AIR POLLUTION + RESPIRATORY DISEASE IN BERLIN NEW HAMPSHIRE

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Abstract
A final report is presented on the relationship of different levels of air pollution to chronic, nonspecific, respiratory disease as measured in 3 residential areas of Berlin, New Hampshire, by a prevalence survey in 1961. In particular, persons were studied who had never smoked cigarettes or who were smoking 21 to 40 cigarettes daily. No consistent effect of air pollution was observed, and possible reasons for this are suggested. Previous analysis of these data had indicated that cigarette smoking was a more significant factor than air pollution in the prevalence of respiratory disease. From observations on the prevalence of respiratory disease in females who had never smoked, and from a review of residence 10 years previously in a subsample of diseased persons, it is concluded that selective migration of diseased people probably occurred and that this could have affected the results of a study of air pollution using residential areas as an index of pollution.