. Author manuscript; available in PMC: 2015 Sep 1.

Published in final edited form as: Eur J Neurol. 2014 May 21;21(9):1211–1e70. doi: 10.1111/ene.12460

Table 4.

Hazard ratios (95% confidence intervals) for the association of race-specific 25(OH)D tertiles with incident dementia hospitalization risk (n=1,652).

	n dementia cases/n total	HR (95% CI)

Whites (n=852)
25(OH)D ≥28.3 ng/ml	18/285	1.00 (reference)
25(OH)D 21.8–<28.3 ng/ml	31/283	1.74 (0.95, 3.18)
25(OH)D <21.8 ng/ml	24/284	1.32 (0.69, 2.55)
Blacks (n=800)
25(OH)D ≥19.3 ng/ml	23/267	1.00 (reference)
25(OH)D 14.0–<19.3 ng/ml	24/272	1.22 (0.68, 2.19)
25(OH)D <14.0 ng/ml	25/261	1.53 (0.84, 2.79)

Model is adjusted for demographics variables (age, sex) and behavioral/socioeconomic variables (education, income, physical activity, smoking, alcohol use, body mass index, waist circumference, and vitamin D supplementation).