LEVELS OF AIR POLLUTION AND RESPIRATORY DISEASE IN BERLIN, NEW HAMPSHIRE.

The relation of air pollution to various parameters on a standard British questionnaire and to FVC, PEFR, and FEV/sub 1/./sub 0/ in a sample of 1,261 people from the town is reported. There was no consistent effect of air pollution on prevalence of respiratory disease. There was an increase in simple chronic bronchitis in nonsmoking females related to the degree of air pollution. Factors which could have perverted the data include: insufficient pollution, variable pollution within an area, employment, and selective migration (evidence of this latter factor).