This cohort study evaluated racial differences in mortality among Blacks and Whites 65 years and olders.
A total of 4136 men and women (1875 Whites and 2261 Blacks) living in North Carolina were interviewed in 1986 and followed up for mortality until 1994.
Hazard ratios (HRs) for all-cause and cause-specific mortality were calculated, with adjustment for sociodemographic and coronary heart disease (CHD) risk factors.
Black persons had higher mortality rates than Whites at young-old age (65-80 years) but had significantly lower mortality rates after age 80.
Black persons age 80 or older had a significantly lower risk of all-cause mortality. (HR of Blacks vs Whites, 0.75 ; 95% confidence interval [CI]=0.62,0.90) and of CHD mortality (HR 0.44 ; 95% CI=0.30,0.66).
These differences were not observed for other causes of death.
Racial differences in mortality are modified by age.
This mortality crossover could be attributed to selective survival of the healthiest oldest Blacks or to other biomedical factors affecting longevity after age 80.
Because the crossover was observed for CHD deaths only, age overreporting by Black older persons seems an unlikely explanation of the mortality differences.
Mots-clés Pascal : Noir américain, Caucasoïde, Négroïde, Etude cas, Personne âgée, Homme, Etude cohorte, Cardiopathie coronaire, Ethnie, Race, Etude comparative, Facteur sociodémographique, Sexe, Mortalité, Epidémiologie, Caroline du Nord, Etats Unis, Amérique du Nord, Amérique, Appareil circulatoire pathologie
Mots-clés Pascal anglais : Black American, Caucasoid, Negroid, Case study, Elderly, Human, Cohort study, Coronary heart disease, Ethnic group, Race, Comparative study, Sociodemographic factor, Sex, Mortality, Epidemiology, North Carolina, United States, North America, America, Cardiovascular disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0164678
Code Inist : 002B12A03. Création : 16/11/1999.