Table 4.

Comparison of serum ALP, P and Ca²⁺ levels before and after treatment (x̅ ± sd)

Items	Group A (n=115)	Group B (n=100)	t	P
ALP (U/L)
Before treatment	75.25±6.17	76.06±7.05	0.898	0.370
After treatment	60.36±10.29***	59.47±11.52***	0.598	0.550
P (mmol/L)
Before treatment	1.12±0.20	1.13±0.28	0.304	0.761
After treatment	1.11±0.21***	1.10±0.24***	0.326	0.745
Ca2+ (mmol/L)
Before treatment	2.35±0.48	2.37±0.51	0.296	0.768
After treatment	2.26±0.52***	2.31±0.39***	0.788	0.432

Note: Compared with the same group before treatment;

^***P < 0.001.

ALP: alkaline phosphatase; P: blood phosphorus; Ca²⁺: calcium ion.