Table 3.

Association between magnesium/PTH and hemoglobin.

	Magnesium and hemoglobin (n = 307)			PTH and hemoglobin (n = 307)
	β	R 2	P	β	R 2	P
Model 1	0.331	0.094	<0.001	−0.288	0.080	<0.001
Model 2	0.275	0.213	<0.001	−0.257	0.208	<0.001
Model 3	0.265	0.241	<0.001	−0.262	0.243	<0.001
Model 4	0.230	0.272	<0.001	−0.225	0.283	<0.001
Model 5	0.174	0.301	0.004	−0.176	0.301	0.003

Model 1: general regression analysis; Model 2: adjusted for age, sex, duration of disease, and BMI; Model 3: adjusted for age, sex, duration of disease, BMI, albumin, and calcium; Model 4: adjusted for age, sex, duration of disease, BMI, albumin, calcium, and eGFR; Model 5: adjusted for age, sex, duration of disease, BMI, albumin, calcium, eGFR, and PTH.