Table 4.

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

	Premenopausal						Postmenopausal
	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	0.000018	0.592	0.000007	0.491	0.000004	0.696	0.000013	0.270	0.000031	0.064	0.000019	0.148
Phosphorus intake	0.000010	0.149	0.000003	0.643	0.000001	0.882	0.000006	0.486	0.000014	0.371	0.000014	0.187
Ca/P ratio	0.008565	0.313	0.000873	0.922	0.001513	0.871	0.007024	0.412	0.010293	0.402	-0.002908	0.751
Model 2
Calcium intake	0.000020	0.029	0.000009	0.294	0.000006	0.501	0.000013	0.286	0.000031	0.052	0.000018	0.147
Phosphorus intake	0.000011	0.097	0.000005	0.486	0.000001	0.777	0.000003	0.698	0.000008	0.583	0.000009	0.322
Ca/P ratio	0.009746	0.224	0.003217	0.701	0.003813	0.632	0.009180	0.298	0.013955	0.233	0.000190	0.982
Model 3
Calcium intake	0.000022	0.022	0.000012	0.169	0.000005	0.564	0.000009	0.454	0.000025	0.112	0.000012	0.300
Phosphorus intake	0.000012	0.072	0.000007	0.294	0.000002	0.725	0.000002	0.765	0.000007	0.608	0.000008	0.385
Ca/P ratio	0.008914	0.269	0.002167	0.798	0.001785	0.827	0.005130	0.596	0.006959	0.549	-0.005030	0.534

Model 1: adjustment for age, household income, education level, residential areas, alcohol consumption, smoking, physical activity, energy intake per day, dietary supplement, and duration of breast feeding. 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.