Laparoscopic cholecystectomy | Converted cholecystectomy | P value | ||||
---|---|---|---|---|---|---|
Number of patients (%) | 3846 (95.84%) | 167 (4.16%) | – | |||
Age (years) | Mean ± SD | 54.09 ± 14.72 | 61.54 ± 13.60 | < 0.0011 | ||
20–65 | 2893 | 101 (3.37%) | < 0.0012 | |||
65 + | 953 | 66 (6.48%) | ||||
80 + | 86 | 15 (14.85%) | – | |||
Gender | Men | 1009 | 74 (6.83%) | < 0.0012 | ||
Women | 2837 | 93 (3.17%) | ||||
Lower abdominal surgery (N/A: 397) | No | 2208 | 84 (4.76%) | 0.1162 | ||
Yes | 1261 | 63 (3.66%) | ||||
Upper abdominal surgery (N/A:397) | No | 3335 | 116 (3.36%) | < 0.0012 | ||
Yes | 134 | 31 (18.78%) | ||||
Acute cholecystitis in patient history (N/A:350) | No | 3258 | 114 (3.38%) | < 0.0012 | ||
Yes | 256 | 35 (12.03%) | ||||
Timing of surgery (N/A: 41) | Between 3–6 weeks | 42 | 6 (12.50%) | 0.8044 | ||
After 6 weeks | 179 | 23 (11.39%) | ||||
ERCP in patient history (N/A:1) | No | 3411 | 125 (3.54%) | < 0.0012 | ||
Yes | 434 | 42 (8.82%) | ||||
Indication for ERCP | Acute biliary pancreatitis | 98 | 9 | Not tested | ||
Moderate biliary tract obstruction | 90 | 9 | ||||
Severe biliary tract obstruction | 184 | 20 | ||||
Other indication | 62 | 4 | ||||
Surgeon’s annual surgery volume (N/A:69) | 1–10 per year | 889 | 38 (4.10%) | 0.6853 | ||
11–40 per year | 2191 | 102 (4.45%) | ||||
> 40 per year | 697 | 27 (3.73%) | ||||
Mean ± SD | 27.53 ± 22.45 | 2 7.26 ± 20.88 | 0.8811 | |||
Surgical experience (years) | 0–6 years | 699 | 20 (2.78%) | 0.0033 | ||
7–15 years | 1209 | 42 (3.36%) | ||||
> 15 years | 1869 | 105 (5.32%) | ||||
Mean ± SD | 16.23 ± 9.46 | 21.09 ± 11.99 | < 0.0011 |