Table 5.
Surgery-related outcomes by group for patients with nonperforated appendices
| Factor | Group; no. (%)* or median [IQR]† | p value | |
|---|---|---|---|
| SILA, n = 67 | CLA, n = 548 | ||
| No. of drain tubes | |||
| 0 | 58 (86.6) | 524 (95.6) | 0.008 |
| 1 | 9 (13.4) | 23 (4.2) | |
| 2 | 0 (0) | 1 (0.2) | |
| Intraoperative findings | |||
| Inflammation | 56 (83.6) | 434 (79.2) | 0.52 |
| Gangrenous appendix | 10 (14.9) | 84 (15.3) | > 0.99 |
| Ruptured appendix (perforated) | 0 (0) | 13 (2.4) | 0.38 |
| Chylous (pus) ascites | 0 (0) | 8 (1.5) | > 0.99 |
| Abscess/local abscess | 0 (0) | 3 (0.5) | > 0.99 |
| Adhesion | 0 (0) | 23 (4.2) | 0.16 |
| Total dose of analgesic | |||
| None | 44 (65.7) | 373 (68.1) | 0.68 |
| ≥ 50 mg meperidine | 23 (34.3) | 175 (31.9) | |
| Surgery outcomes | |||
| Duration of surgery, min. | 60.0 [55.0–75.0] | 50.0 [40.0–65.0] | < 0.001 |
| LOS, h | 72.0 [48.0–96.0] | 55.0 [41.0–68.0] | < 0.001 |
| Time to resuming oral feeding, h | 12.0 [8.0–16.0] | 22.0 [16.0–28.0] | < 0.001 |
| Complications | 2 (3.0) | 79 (14.4) | 0.006 |
| Wound infection | 2 (3.0) | 71 (13.0) | 0.015 |
| Ileus | 0 (0) | 2 (0.4) | > 0.99 |
| Intra-abdominal abscess | 0 (0) | 2 (0.4) | > 0.99 |
| Incision hernia | 1 (1.5) | 3 (0.5) | 0.37 |
CLA = conventional laparoscopic appendectomy; IQR = interquartile range; LOS = length of stay in hospital; SILA = single-incision laparoscopic appendectomy.
*
Determined by Fisher exact test.
†
Determined by Mann–Whitney U test.