Table 3.

Comparison of biochemical variables between group At and Bt

Biochemical variables	Groups
	Group A (n = 18)	Group B (n = 11)	Z	P
Pre-PTH (pg/ml)	45.00 (35.43, 58.13)	41.40 (31.60, 59.80)	0.652	0.515
Post-PTH (pg/ml)	15.40 (6.85, 24.58)	18.40 (14.70, 24.30)	0.472	0.637
Pre-Ca (mmol/L)	2.31 (2.24, 2.38)	2.37 (2.29, 2.41)	0.856	0.392
Post-Ca (mmol/L)	1.97 (1.82, 2.05)	1.99 (1.89, 2.05)	0.562	0.574

Mann-Whitney U test was employed

Pre-PTH preoperative PTH, Post-PTH postoperative PTH, Pre-Ca preoperative total calcium, Post-Ca postoperative total calcium