Clinical evaluation of endoscopic biliary stenting in treatment of malignant obstructive jaundice

Table 2 Comparison of liver function indicators between the observation and control groups, mean ± SD

Indicator	Observation group (n = 29)	Control group (n = 30)	t	P value
ALT (U/L)
Preoperative	107.66 ± 45.66	101.54 ± 42.68	0.759	0.450
Postoperative	49.66 ± 6.26a	52.81 ± 6.74a	1.859	0.068
AST (U/L)
Preoperative	129.66 ± 11.29	126.34 ± 10.75	1.650	0.102
Postoperative	74.89 ± 6.31a	78.43 ± 7.89a	1.899	0.063
TBIL (μmol/L)
Preoperative	186.58 ± 59.38	189.61 ± 60.59	0.783	0.277
Postoperative	90.65 ± 50.11a	104.64 ± 47.65a	1.099	0.276

^aP < 0.05 indicates a significant improvement compared with the preoperative values.

ALT: Alanine aminotransferase; AST: Aspartate aminotransferase; TBIL: Total bilirubin.