Table 3. Mean (standard error of the mean) mineral bone biomarkers over time.

Month	Serum phosphorus (mg/dL)			Serum calcium (mg/dL)			iPTH (pg/mL)
	N	Mean	SEM	N	Mean	SEM	Na	Mean	SEM
0 (Baseline)	92	6.55	0.17	92	9.00	0.08	81	480.5	46.4
1	92	5.90	0.18	92	8.97	0.08	56	469.6	46.0
2	90	5.74	0.16	90	8.96	0.08	63	477.5	44.5
3	90	5.75	0.15	90	9.03	0.08	56	466.3	41.4
4	89	5.63	0.16	89	9.07	0.06	69	475.2	45.0
5	86	5.38	0.15	87	8.99	0.08	58	502.0	46.3
6	81	5.41	0.17	82	9.08	0.08	59	488.0	43.0

^aLaboratory values were collected per routine clinical care. iPTH was not typically measured on a monthly basis. iPTH = intact parathyroid hormone; SEM = standard error of the mean.