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To the Editor:—
Dr. Levy, in his communication published in The Journal December 1, in criticism of the article by Drs. Grulee, Herron and myself, stated that "in the presence of such statistical errors, as I have indicated, the case cannot be considered proved." These statistical errors consist of two criticisms.The first criticism is that we state that the mortality of the group reported was less than one-fourth that of the infant mortality of the same region. This, he says, is incorrect because our group does not contain deaths before 3 weeks of age, whereas the infant mortality of the same region includes all deaths from birth. The infant mortality quoted does not contain deaths occurring in the first two weeks of life. Our only reason in even mentioning these mortalities was to show that our babies were cared for as well as those in the same locality. We
Sanford HN. FACTORS IN INFANT MORTALITY. JAMA. 1934;103(26):2046. doi:10.1001/jama.1934.02750520048024