Table 3.

Multivariate-adjusted associations between dietary calcium, phosphorus, calcium/phosphorus ratio and bone mass density among men

	<50 years						≥ 50 years
	Whole body		Lumbar		Femoral neck		Whole body		Lumbar		Femoral neck
	ß	p	ß	p	ß	p	ß	p	ß	p	ß	p
Model 1
Calcium intake	0.000005	0.648	0.000009	0.546	0.000007	0.552	0.000034	0.005	0.000050	0.014	0.000039	0.002
Phosphorus intake	0.000012	0.109	0.000015	0.092	0.000011	0.197	0.000014	0.118	0.000012	0.333	0.000015	0.075
Ca/P ratio	-0.018726	0.105	-0.008208	0.499	-0.014333	0.327	0.026552	0.019	0.039903	0.016	0.033198	0.001
Model 2
Calcium intake	0.000001	0.888	0.000004	0.764	0.000002	0.823	0.000026	0.021	0.000034	0.192	0.000029	0.014
Phosphorus intake	0.000012	0.099	0.000015	0.080	0.000011	0.162	0.000013	0.212	0.000006	0.629	0.000011	0.174
Ca/P ratio	-0.022948	0.045	-0.013631	0.265	-0.020154	0.160	0.020238	0.069	0.027653	0.110	0.025128	0.013
Model 3
Calcium intake	0.000002	0.804	0.000006	0.650	0.000003	0.741	0.000022	0.065	0.000026	0.191	0.000023	0.046
Phosphorus intake	0.000013	0.089	0.000016	0.073	0.000014	0.086	0.000008	0.359	0.000001	0.937	0.000009	0.300
Ca/P ratio	-0.020239	0.094	-0.012013	0.335	-0.018413	0.216	0.017843	0.125	0.023537	0.179	0.020974	0.041

Model 1: adjustment for age, household income, education level, residential areas, alcohol consumption, smoking, physical activity, energy intake per day, and dietary supplement. Model 2: adjustment for model 1 + body mass index. Model 3: adjustment for model 2 + alkaline phosphatase, ferritin, and 25-hydroxyvitamin D. Ca/P ratio Calcium/phosphorus intake ratio. Results in bold indicate statistical significance at the 0.05 level.