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Metacarpal cortical area and risk of coronary heart disease: the Framingham Study.

The objective of this study was to determine the relation between bone mass and the incidence of coronary heart disease in women and men. Participants included 2,059 cohort members of the Framingham Study (1,236 women and 823 men aged 47-80 years) who underwent posteroanterior hand radiography and were free from cardiovascular disease at baseline (1967-1970) and who were then followed for 30 years through the end of 1997 for the incidence of coronary heart disease. The incidence of coronary heart disease decreased from 15.65/1,000 person-years among women in the lowest metacarpal cortical area quartile to 11.76/1,000 person-years among women in the highest quartile (p(trend) = 0.03), and the inverse relation persisted after adjustment for confounders (highest vs. lowest quartile of metacarpal cortical area: hazard ratio = 0.73, 95% confidence interval: 0.53, 1.00; p(trend) = 0.03). In contrast, no association was present in men (highest vs. lowest quartile of metacarpal cortical area: hazard ratio = 1.14, 95% confidence interval: 0.84, 1.56; p(trend) = 0.55).