Table 3. Loop Inconsistency and Heterogeneity.
| Outcome of Interest | No. of Studies | No. of Patients | Inconsistency | P Valueb | Heterogeneity, τ | |
|---|---|---|---|---|---|---|
| Loopa | IF or RoR (95% CI) | |||||
| Success rate | 20 | 2490 | A-C-D | 1.30 (1.00-5.70) | .73 | 0.8 |
| Overall morbidity | 19 | 2403 | A-C-D | 1.61 (1.00-3.78) | .27 | 0.2 |
| Overall mortality | 19 | 2403 | A-C-D | 1.21 (1.00-25.34) | .90 | <0.1 |
| Acute Pancreatitis | 19 | 2403 | A-C-D | 4.23 (1.00-24.43) | .11 | <0.1 |
| Biliary leak | 18 | 2320 | A-C-D | 1.91 (1.00-17.85) | .57 | <0.1 |
| Overall bleeding | 18 | 2320 | A-C-D | 4.63 (1.00-36.67) | .15 | <0.1 |
| Overall operative time | 8 | 1142 | A-C-D | 19.05 (2.44-35.65) | .02 | >1 |
| LOS | 14 | 1818 | A-C-D | 1.76 (0.00-4.28) | .64 | >1 |
| Total costs | 4 | 521 | A-C-D | 17.06 (3.56-107.21) | .04 | >1 |
Abbreviations: IF, absolute difference between direct and indirect estimates; LOS, length of postoperative hospital stay; RoR, logarithm of the ratio of 2 odds ratios.
a
A indicates laparoscopic cholecystectomy plus laparoscopic common bile duct exploration; C, preoperative endoscopic retrograde cholangiopancreatography plus laparoscopic cholecystectomy; and D, laparoscopic cholecystectomy plus intraoperative endoscopic retrograde cholangiopancreatography.
b
P values were calculated with the χ2 test.