TABLE 3.

Twelve-month changes in metabolic variables by group¹

	Carbonate		Phosphate
Variable	n	Mean ± SEM	n	Mean ± SEM	P2
sPhos (mg/dL)	104	+0.245 ± 0.0423	103	+0.139 ± 0.0454	0.09
scrt (mg/dL)	106	+0.051 ± 0.0123	105	−0.001 ± 0.012	<0.003
sCa (mg/dL)	106	+0.001 ± 0.047	105	−0.048 ± 0.041	0.44
NTx (nmol BCE/mmol)	106	+17.1 ± 2.793	105	+16.0 ± 3.423	0.80
catocrt (g/g)	106	+0.011 ± 0.0103	105	+0.021 ± 0.0103	0.50
ohprtocrt (μmol/mmol)	106	+6.26 ± 0.9623	105	+5.61 ± 1.253	0.68
ptocrt (g/g)	106	−0.053 ± 0.028	104	+0.073 ± 0.0253	<0.001

¹sPhos, serum phosphorus; scrt, serum creatinine; sCa, serum calcium; NTx, urinary N-telopeptide; BCE, bone collagen equivalents; catocrt, urinary calcium:creatinine ratio; ohprtocrt, urinary hydroxyproline:creatinine ratio; ptocrt, urinary phosphorus:creatinine ratio.

²Between-group comparisons.

^3,4Within-group comparisons: ³P < 0.01, ⁴P < 0.05.