(21-06-11) Correlates and Prevalence of Insufficient 25-Hydroxyvitamin D Status in Black and White Older Adults: The Health, Aging and Body Co

Correlates and Prevalence of Insufficient 25-Hydroxyvitamin D Status in Black and White Older Adults: The Health, Aging and Body Composition Study.
Shea MK, Houston DK, Tooze JA, Davis CC, Johnson MA, Hausman DB, Cauley JA, Bauer DC, Tylavsky F, Harris TB, Kritchevsky SB; for the Health, Aging and Body Composition Study.
Source
From the *Department of Internal Medicine, School of Medicine, Wake Forest University, Winston-Salem, North Carolina; ??Department of Foods and Nutrition, University of Georgia, Athens, Georgia; ??Division of Epidemiology, University of Pittsburgh, Pittsburgh, Pennsylvania; ??Department of Medicine, University of California at San Francisco, San Francisco, California; ?aDepartment of Preventive Medicine, University of Tennessee, Memphis; and #National Institute of Aging, Bethesda, Maryland.
Abstract
OBJECTIVES:
To determine the prevalence and correlates of vitamin D insufficiency in black and white older adults.
DESIGN:
Cross-sectional.
SETTING:
Health, Aging and Body Composition Study.
PARTICIPANTS:
Nine hundred seventy-seven black and 1,604 white adults aged 70 to 81.
MEASUREMENTS:
Logistic regression and classification and regression tree analysis were used to identify correlates of vitamin D insufficiency (25-hydroxyvitamin D (25(OH)D) RESULTS:
The prevalence of 25(OH)D insufficiency was 84% in blacks and 57% in whites. Seventy-six percent of blacks and 56% of whites did not take a multivitamin; those who did not take a multivitamin were more likely to be vitamin D insufficient (odds ratio (OR)=5.17 (95% confidence interval (CI)=3.47-7.70) for blacks; OR=2.56, 95% CI=2.05-3.19 for white). Additional risk factors for vitamin D insufficiency were vitamin D-containing supplement use, female sex, and obesity in blacks; and winter season, low dietary vitamin D intake, obesity, type 2 diabetes mellitus, and female sex in whites.
CONCLUSION:
Vitamin D insufficiency was more prevalent in blacks than whites. Not consuming a multivitamin increased the odds of vitamin D insufficiency in blacks and whites. Knowledge of additional risk factors such as dietary intake and comorbid conditions may help identify older adults who are likely to be vitamin D insufficient.

Source: J Am Geriatr Soc. 2011 Jun 13.

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