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Utilizing the facilities of the Pan American Sanitary Bureau, the author makes available statistics concerning births, deaths, morbidity and infections in the American nations. Obviously the various nations differ as to the sufficiency and accuracy of the data. Although the tables begin with the year 1930, it is recognized that the data for more recent years are more nearly complete than for the earlier ones. The Pan American Sanitary Bureau has been aiding in this type of work since 1939. The incompleteness of registration causes the editor to issue a warning against accepting the data as wholly accurate for purposes of comparison. In some countries more than half of the total deaths reported are still classified under the heading of "unspecified or ill defined." With all of its insufficiencies, the book is nevertheless the most dependable source of the data discussed at present available.
Informe biodemográfico y epidemiológico de las Americas (Biostatistical and Epidemiological Report on the Americas). JAMA. 1944;124(8):542. doi:10.1001/jama.1944.02850080070037