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Provisional estimates of selected comparability ratios based on dual coding of 1966 death certificates by the seventh and eight revisions of the International Classification of Diseases
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October 25, 1968
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Description:The International Lists of Causes of Death have been revised approximately every 10 years since 1900. Each decennial revision has produced some break in the comparability of cause-of-death statistics. As described below the Eighth Revision contains major modifications in several sections of the lists. Also, the rules for selecting ‘the underlying cause have been simplified. In addition, changes have been introduced in the special rules and decisions which adapt the coding procedures to reporting practices in the United States. Consequently, measures of the resultant degree of discontinuity in cause-of-death statistics are essential to interpretation of mortality trends.
This report presents ratios to ascertain the effects of the Eighth Revision International Classification of Diseases, Adapted for Use in the United States (ICDA) on the comparability of mortality statistics for selected causes for all age groups combined, and separately for infants (tables 1 and 2). The ICDA is based on the Eighth Revision of the International Classification of Diseases (ICD).
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