Table 2.

Serum creatinine and mineral concentrations by prepartum dietary treatment (Trt)

Constituent	Treatment1			SE	Contrast,2P		P-value
	CON	ND	NDCA		1	2	Time	Trt × time
Prepartum
Creatinine, mg/dL	1.04	1.06	1.04	0.028	0.64	0.64	<0.01	0.72
Ca, mg/dL	9.17	9.30	9.35	0.053	0.02	0.46	<0.01	0.48
P, mg/dL	6.64	6.61	6.32	0.11	0.15	0.04	<0.01	0.56
Na, mmol/L	141.6	140.9	141.4	0.52	0.44	0.48	<0.01	0.61
K, mmol/L	4.53	4.65	4.70	0.036	<0.01	0.26	0.76	<0.01
Cl, mmol/L	103.8	106.8	106.8	0.47	<0.01	0.97	<0.01	0.28
Mg, mg/dL	2.14	2.19	2.17	0.034	0.30	0.65	<0.01	0.24
Postpartum
Creatinine, mg/dL	1.03	1.14	1.08	0.038	0.76	0.95	<0.01	0.90
Ca, mg/dL	8.08	8.53	8.35	0.13	0.02	0.30	<0.01	0.02
P, mg/dL	5.22	5.68	5.92	0.20	<0.01	0.34	<0.01	0.22
Na, mmol/L	143.6	143.8	144.2	0.35	0.32	0.35	<0.01	0.73
K, mmol/L	4.48	4.61	4.62	0.046	0.02	0.84	0.02	0.02
Cl, mmol/L	103.4	102.8	103.9	0.44	0.99	0.08	<0.01	<0.01
Mg, mg/dL	2.03	2.11	2.22	0.047	0.37	0.38	<0.01	0.21

¹Diet CON = positive DCAD; ND = negative DCAD; and NDCA = negative DCAD with increased dietary Ca.

²Preplanned contrast statements were (1) CON versus ND and NDCA and (2) ND versus NDCA.