Efficacy and safety of double endoscopy combined with exploration in the treatment of elderly patients with cholecystolithiasis complicated with choledocholithiasis

Table 4 Comparison of postoperative complications between the two groups

Variables	The elderly group (n = 63)	The young and middle-aged group (n = 51)	X²	P value
Pulmonary infection	4(6.3%)	1(2.0%)
Abdominal bleeding	1(1.6%)	1(2.0%)
Postoperative ileus	1(1.6%)	0(0%)
Intestinal infection	1(1.6%)	0(0%)
Biliary tract infection	1(1.6%)	0(0%)
Biliary leakage	2(3.2%)	0(0%)
Overall incidence	10(15.9%)	2(3.9%)	4.274	0.039

Note: patients in the elderly group were ≥ 60 years old and those in the young and middle-aged group were < 60 years old. P-value in bold indicated a significant difference (P < 0.05)

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