Table 3.

Association of serum 25(OH)D < 50 nmol/l and anaemia, stratified by race (Odds ratios and their 95% confidence intervals)

	All		White		Black
	OR*, †	95% CI	OR*	95% CI	OR*	95% CI
Unadjusted‡	2.64	1.43, 4.86	0.77	0.33, 1.81	5.36	2.00, 14.33
Model 1§	2.02	0.99, 4.14	0.69	0.28, 1.68	5.36	1.88, 15.28
Model 2∥	1.75	0.84, 3.63	0.55	0.22, 1.40	5.08	1.74, 14.85
Model 3¶	2.08	0.92, 4.73	0.62	0.22, 1.75	6.42	1.88, 21.99

^*Odds ratio comparing 25(OH)D < 50 nmol/l vs. 25(OH)D ≥ 50 nmol/l

^†Race not included as covariate due to evidence of interaction (P=0.003)

^‡Crude association between 25(OH)D < 50 nmol/l and anaemia, n 602

^§Adjusted for age, sex, BMI, n 599

^∥Model 1 + adjustment for CRP, IL-6, IL-8, n 586

^¶Model 2 + adjustment for use of iron supplements, income, and history of diabetes, n 465