Table 3.
Intraoperative Characteristics of Both Groups
| Variables | Surgery Within 72 h | Surgery After 72 h | P Value |
|---|---|---|---|
| n = 160 | n = 212 | ||
| Cholangiogram (n = 365) | 159 (99.4%) | 206 (97.2%) | .2 |
| Cystic duct stone | 20 (12.5%) | 52 (24.5%) | .003 |
| Common bile duct stone | 35 (21.9 %) | 46 (21.7%) | .98 |
| Difficulty grading | |||
| I | 0 | 0 | |
| II | 0 | 0 | |
| III | 14 (8.8%) | 11 (5.2%) | .12 |
| IV | 138 (86.3%) | 176 (83.0%) | .45 |
| V | 8 (5.0%) | 25 (11.8%) | .022 |
| Fundus first | 10 (6.3%) | 18 (8.5%) | .41 |
| Drain | 141 (88.1%) | 201 (94.8%) | .02 |
| Length of surgery, min | |||
| Mean (range) | 96 (32–350) | 100 (35–240) | .40 |
| Conversion to open | 1 (0.6%) | 1 (0.5%) | .84 |