As in past years, the information used in the compilation of this report was secured by addressing a communication to the health officer of each of the ninety-three cities, requesting the number of deaths from typhoid both among residents and among nonresidents which were recorded in 1939. As the population figures of the 1940 census are not yet available, the uncertainty of rates based on local estimates is recognized. In all instances the local estimate when furnished by the health officer has been used. With the approach of the new census day there are some who apparently feel that they have been unduly optimistic in claiming population increases and now submit estimates below that of 1938. The total of each of two groups of cities (South Atlantic and East North Central) is below that of last year. Probably no grave statistical error has been committed by using the local estimate
TYPHOID IN THE LARGE CITIES OF THE UNITED STATES IN 1939TWENTY-EIGHTH ANNUAL REPORT. JAMA. 1940;114(21):2103–2107. doi:10.1001/jama.1940.62810210006012
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