Establishment and evaluation of prediction model of recurrence after laparoscopic choledocholithotomy

Table 1 Single-factor analysis of gallstone recurrence after laparoscopic choledocholithotomy, n (%)/mean ± SD

Factors	Recurrence (n = 26)	No recurrence (n = 228)	χ²-value	P value
Gender			0.758	0.384
Male	11 (42.31)	117 (51.32)
Female	15 (57.69)	111 (48.68)
Age (years old)	60.9 ± 13.7	59.1 ± 14.6	-0.587	0.558
Cholangitis			25.612	< 0.001
Positive	13 (50.00)	27 (11.84)
Negative	13 (50.00)	201 (88.16)
The diameter of the common bile duct ≥ 15mm			27.801	< 0.001
Positive	19 (73.08)	54 (23.68)
Negative	7 (26.92)	174 (76.32)
Number of stones ≥ 10			25.612	< 0.001
Positive	13 (50.00)	27 (11.84)
Negative	13 (50.00)	201 (88.16)
The diameter of stones ≥ 10mm			15.301	< 0.001
Positive	18 (69.23)	70 (30.70)
Negative	8 (30.77)	158 (69.30)
Lithotripsy			15.521	< 0.001
Positive	5 (19.23)	6 (2.63)
Negative	21 (80.77)	222 (97.37)
Hepatitis B			0.997	0.318
Positive	5 (19.23)	28 (12.28)
Negative	21 (80.77)	200 (87.72)
Duration of operation (min)	225.88 ± 54.61	195.05 ± 50.39	-2.931	0.004
Preoperative total blood bilirubin (μmol/L)	97.96 ± 50.76	49.16 ± 43.63	-5.311	< 0.001
AST (U/L)	155.96 ± 137.25	94.64 ± 103.91	-2.751	0.006
ALT (U/L)	177.19 ± 135.09	142.04 ± 148.29	-1.155	0.249
T tube			26.448	< 0.001
Positive	22 (84.62)	75 (32.89)
Negative	4 (15.38)	153 (67.11)

AST: Aspartate aminotransferase; ALT: Alanine aminotransferase.