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Special Article

JAMA. 1927;88(4):243-245. doi:10.1001/jama.1927.02680300029011.
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DEATHS FROM DIABETES IN MASSACHUSETTS, 1900-1925  ANGELINE D. HAMBLENStatistician, Massachusetts Department of Public HealthANDELLIOTT P. JOSLIN, M.D.BOSTONSince 1900 there has been an upward trend in the death rate from diabetes in Massachusetts. The rate for Massachusetts has been constantly higher than the rate for the registration area (chart 1). This was true not only for the crude rates but also in 1910 and 1920 when the rates for the registration states and for Massachusetts were adjusted to the standard million population.

URBAN AND RURAL  In the registration area since 1906 the rate for urban districts has been considerably higher than for rural. In Massachusetts, however, with the exception of 1912, 1922 and 1923, the rate for rural districts has been higher than for urban (chart 2). To determine whether this difference is significant, the mean difference and the standard deviation of the mean difference were


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