Journal
JOURNAL OF BONE AND MINERAL RESEARCH
Volume 18, Issue 12, Pages 2238-2244Publisher
WILEY
DOI: 10.1359/jbmr.2003.18.12.2238
Keywords
aging; epidemiology; osteoporosis; bone densitometry
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Introduction: Several studies have examined factors associated with bone mineral density (BMD)in older men. None, however, have had sufficient numbers of black men to allow for meaningful comparisons by race. Materials and Methods: A total of 503 white and 191 black men aged 65 and older(75.1 +/- 5.8 and 72.2 +/- 5.7 years, respectively) were recruited from the Baltimore metropolitan area. All men completed a battery of self-administered questionnaires, underwent a standardized examination, and had BMD measured at the femoral neck, lumbar spine, and total body. Data were analyzed using multiple variable linear regression models, adjusted for potential confounding variables; two-way interactions with main effects were included in models where appropriate. Results: Black men had significantly higher adjusted BMD at the femoral neck (difference 0.09 [95% CI: 0.07, 0.12] Mg/cm(2)), lumbar spine (0.07 [0.04, 0. 10] mg/cm(2)), and total body (0.06 [0.03, 0.08] Mg/cm(2)) than white men. Conclusions: Older black men have significantly higher BMD than older white men, even after adjustment for factors associated with BMD. These differences, especially at the femoral neck, may explain the reduced incidence of hip fracture in black compared with white men.
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