From modern studies, especially those of Pearson in England, it has been known that there is a certain positive correlation in the length of life of husbands and wives. For single causes of death it has been proved for tuberculosis by several investigators that there occurs a definite association between husband and wife in incidence and mortality from this disease. Now Antonio Ciocco1 has reached some new results by applying modern statistical methods to death records of marital groups.
Ciocco obtained the material for his study from the death records of white persons filed in the Washington County (Md.) Health Department during the period 1898 to 1938. The records of married men have been matched with those of widows and vice versa. Thus the records of 2,578 couples have been collected, or 45 per cent of what it could theoretically have been possible to discover. Among the 2,578 couples,
MORTALITY OF HUSBANDS AND WIVES. JAMA. 1941;116(10):952. doi:10.1001/jama.1941.02820100046011
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