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.

Table 2 Multivariate logistic regression analysis of recurrence after laparoscopic choledocholithotomy

	B	SE	Wald	P value	Exp (B)	95%CI
Cholangitis	1.347	0.647	4.335	0.037	3.846	1.082	13.666
The diameter of the common bile duct	1.535	0.645	5.668	0.017	4.639	1.312	16.409
Diameter of stones	2.176	0.750	8.414	0.004	8.811	2.025	38.335
The number of stone	1.784	0.699	6.510	0.011	5.956	1.512	23.458
Lithotripsy	2.242	1.130	3.935	0.047	9.411	1.027	86.231
Duration of operation	-0.009	0.007	1.475	0.224	0.991	0.977	1.006
Preoperative total blood bilirubin	0.021	0.007	10.239	0.001	1.022	1.008	1.035
AST	0.004	0.003	1.467	0.226	1.004	0.997	1.011
T tube	2.185	0.815	7.198	0.007	8.894	1.802	43.900
Constant	-6.853	1.725	15.779	0.000	0.001

AST: Aspartate aminotransferase.