[EQ] The fall and rise of US inequities in premature mortality

The fall and rise of US inequities in premature mortality: 1960-2002

 

Nancy Krieger*, David H. Rehkopf, Jarvis T. Chen, Pamela D. Waterman, Enrico Marcelli¤b, Malinda Kennedy
*Department of Society, Human Development and Health, Harvard School of Public Health, Boston, Massachusetts, USA

PLoS Med 5(2) February 2008: e46.doi:10.1371/journal.pmed.0050046

 

Available online at: http://medicine.plosjournals.org/perlserv/?request=get-document&doi=10.1371/journal.pmed.0050046

 

Background: Debates exist as to whether, as overall population health improves, the absolute and relative magnitude of income- and race/ethnicity-related health disparities necessarily increase - or decrease. We accordingly decided to test the hypothesis that health inequities widen-or shrink-in a context of declining mortality rates, by examining annual US mortality data over a 42 year period.

 

Methods and Findings: Using US county mortality data from 1960-2002 and county median family income data from the 1960-2000 decennial censuses, we analyzed the rates of premature mortality (deaths among persons under age 65) and infant death (deaths among persons under age 1) by quintiles of county median family income weighted by county population size.

 

Between 1960 and 2002, as US premature mortality and infant death rates declined in all county income quintiles, socioeconomic and racial/ethnic inequities in premature mortality and infant death (both relative and absolute) shrank between 1966 and 1980, especially for US populations of color; thereafter, the relative health inequities widened and the absolute differences barely changed in magnitude. Had all persons experienced the same yearly age-specific premature mortality rates as the white population living in the highest income quintile, between 1960 and 2002, 14% of the white premature deaths and 30% of the premature d eaths among populations of color would not have occurred.

 

Conclusions: The observed trends refute arguments that health inequities inevitably widen-or shrink-as population health improves. Instead, the magnitude of health inequalities can fall or rise; it is our job to understand why.

 

 

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