Table 1.

Biochemical parameters during period of study.

	Minimum	Maximum	Mean	SD
Basal
Calcium (mg/dl)	11.20	13.50	11.73	0.85
Phosphorus (mg/dl)	1.40	3.70	2.41	0.48
Creatinine (mg/dl)	0.55	1.30	0.84	0.17
25-OH-D (mg/dl)	4.60	95.00	25.63	18.85
PTH (pg/ml)	78.18	451.10	181.91	102.37
3 months
Calcium (mg/dl)	9.00	16.70	10.71**	1.63
Phosphorus (mg/dl)	0.87	4.10	2.63**	0.70
Creatinine (mg/dl)	0.63	1.44	0.90*	0.23
25-OH-D (mg/dl)	4.00	80.10	30.12ns	17.43
PTH (pg/ml)	79.35	511.00	195.47ns	111.71
6 months
Calcium (mg/dl)	8.30	12.30	10.17**	0.97
Phosphorus (mg/dl)	1.90	4.00	2.76**	0.59
Creatinine (mg/dl)	0.56	1.58	0.83ns	0.25
25-OH-D (mg/dl)	9.20	64.20	28.95ns	12.57
PTH (pg/ml)	66.72	502.00	191.25ns	120.79
12 months
Calcium (mg/dl)	8.70	12.40	10.20**	0.95
Phosphorus (mg/dl)	2.10	3.80	2.71*	0.43
Creatinine (mg/dl)	0.55	1.96	0.88*	0.30
25-OH-D (mg/dl)	10.70	70.60	29.06ns	14.88
PTH (pg/ml)	53.24	276.10	152.47*	70.16

^* p < 0.05 compared with baseline values; **p < 0.01 compared with baseline values; ns, not significant.

2-OH-D, 25-hydroxyvitamin D; PTH, parathyroid hormone; SD, standard deviation.