Risk factors for recurrence of common bile duct stones after surgical treatment and effect of ursodeoxycholic acid intervention

Table 3 Comparison of liver function indexes between control and ursodeoxycholic acid groups

Group	n	TBiL (μmon/L, mean ± SD)		DBiL (μmon/L, mean ± SD)		GGT (U/L, mean ± SD)
		Pre-treatment	Post-treatment	Pre-treatment	Post-treatment	Pre-treatment	Post-treatment
Control	47	96.65 ± 11.24	77.31 ± 8.52	63.74 ± 7.45	45.39 ± 5.69	328.65 ± 20.45	189.63 ± 16.87
UDCA	53	98.63 ± 11.42	55.39 ± 6.53	63.36 ± 7.96	32.10 ± 4.62	330.25 ± 20.64	142.32 ± 14.21
t value		0.872	-14.532	-0.251	-12.896	0.388	-15.217
P value		0.385	< 0.001	0.803	< 0.001	0.699	< 0.001
		ALT (U/L, mean ± SD)		ALP (U/L, mean ± SD)		AST (U/L, mean ± SD)
		Pre-treatment	Post-treatment	Pre-treatment	Post-treatment	Pre-treatment	Post-treatment
Control	47	274.63 ± 25.41	149.36 ± 15.36	256.66 ± 24.12	171.33 ± 22.09	201.32 ± 16.35	121.35 ± 11.57
UDCA	53	268.54 ± 21.23	112.52 ± 14.25	262.36 ± 25.78	122.61 ± 16.00	201.11 ± 15.47	96.98 ± 10.44
t value		-1.306	-12.440	1.139	-12.733	-0.066	-11.072
P value		0.195	< 0.001	0.257	< 0.001	0.947	< 0.001

TBiL: Total bilirubin; DBiL: Direct bilirubin; GGT: Gamma-glutamyl transferase; ALT: Alanine aminotransferase; ALP: Alkaline phosphatase; AST: Aspartate aminotransferase; UDCA: Ursodeoxycholic acid.