Ethnic Trends in Survival Curves and Mortality

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Abstract
The nature of secular trends in survival curves has been widely debated. Fries (1984) has argued for increasing rectangularization, while Myers and Manton (1984a; 1984b) have observed increases in mean age at death with little or no change in standard deviation— arguing against rectangularization. We hypothesize that ethnic differences in mortality trendsm may shed light on this argument. Using California population data for 1970,1980, and 1990, we examined ethnic differences in rectangularization using both visual and means and standard deviations analyses. The resulting patterns varied by ethnicity, gender, and type of analyses. Nearly all female groups demonstrated modest rectangularization, regardless of mean age of death, while most of the male groups did not.

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