Table 4.
Preoperative characteristics predictive of conversion in our series vs. CholeS study
| This study | CholeS | p value | OR (95% CI) | |
|---|---|---|---|---|
| Conversions | 28/5738 (0.49%) | 221/6615 (3.34%)* | 0.00001 | 0.142 (0.096–0.211) |
| Age ≥ 50 years | 17 (60.7%) | 179 (81%) | 0.025 | 0.363 (0.158–0.831) |
| Male gender | 10 (35.7%) | 111 (50%) | 0.165 | 0.551 (0.243–1.246) |
| Emergency admission | 18 (64.3%) | 57 (26%) | 0.0001 | 5.179 (2.259–11.873) |
| Preoperative ERCP | 0% | 57 (26%) | 0.001 | Not applicable |
| Main indication for surgery | ||||
| Acute Cholecystitis | 3 (10.7%) | 123 (56%) | 0.001 | 0.096 (0.028–0.326) |
| Pancreatitis | 0% | 13 (6%) | 0.3714 | Not applicable |
| CBD stone/jaundice | 13 (46.4%) | 40 (18%) | 0.002 | 3.922 (1.731–8.885) |
| Thick-walled gall bladder on ultrasound | 7 (25%) | 122 (55%) | 0.0043 | 0.27 (0.110–0.662) |
| Dilated CBD on ultrasound | 11 (39.3%) | 66 (30%) | 0.385 | 1.520 (0.675–3.420) |
*CholeS data were divided into two random groups with similar conversion rates: one to produce a risk score and one to validate the resulting score