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The author has recently made a study of English and American seasonal mortality and presents a number of interesting observations. He has used the annual review of the Registrar General's Office for the English and Welsh material and the annual registration area statistics of the United States census for the period from 1931 to 1938; the crude death rates have been standardized for age though not for sex. He found that it was not necessary to correct for monthly shifts in the stratification of the population. In his analysis of the American material he has treated the New England group of states separately from the whole American area. This might seem proper because the wide range of climatic, racial-social factors involved in the consideration of the entire continental American area by comparison with the relatively compact and more homogeneous New England area does produce flattening of the mortality range.
A Comparative Study of the Seasonal Incidence of Mortality in England and Wales and in the United States of America. JAMA. 1941;116(7):657. doi:10.1001/jama.1941.02820070107035
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