Table 3.

Multivariate-adjusted mean 1,25(OH)₂D levels^a by categories of dairy food, milk, calcium, and vitamin D intake in all men and stratified on vitamin D status

	Median	All men N=288		25(OH)D >15 ng/mL N=154		25(OH)D ≤15 ng/mL N=134
		N	Mean 1,25(OH)2D (pg/mL)	N	Mean 1,25(OH)2D (pg/mL)	N	Mean 1,25(OH)2D (pg/mL)
Dairy	times/week
quartile 1	3	74	36.7	29	41.4	45	33.7
quartile 2	7	70	36.8	35	38.4	35	35.0
quartile 3	10	70	37.1	37	34.8	33	40.5
quartile 4	20	74	39.0	53	41.7	21	33.9
p-valueb			0.45		0.40		0.95
Total milk	times/week
quartile 1	0	69	35.8	36	36.9	33	33.8
quartile 2	0.5	81	36.8	36	41.6	45	32.7
quartile 3	3	67	39.6	29	39.5	38	38.9
quartile 4	7	71	38.3	53	38.4	18	37.3
p-value			0.27		0.49		0.53
Calcium	mg/day
quartile 1	427	69	37.0	29	38.4	40	34.9
quartile 2	571	73	36.2	32	37.4	41	34.9
quartile 3	725	72	38.1	41	39.4	31	36.6
quartile 4	1033	74	38.5	52	40.8	22	35.5
p-value			0.40		0.41		0.69
Vitamin D	IU/day
quartile 1	116	71	36.4	29	33.4	42	38.6
quartile 2	190	72	34.6	39	38.0	33	30.4
quartile 3	397	72	40.3	37	43.3	35	37.0
quartile 4	675	73	38.8	49	40.7	24	34.9
p-value			0.15		0.14		0.96

^aModel adjusted for age, race, total energy intake, BMI, alcohol intake. Models for calcium and vitamin D intake also adjusted for the other as a continuous variable.

^bp-value for continuous variable