Table 1.
Patient- and operation-related characteristics
| Non-laparoscopic surgeons (n = 608) | Laparoscopic surgeons (n = 952) | p value | |
|---|---|---|---|
| Age, median, years (min–max) | 33 (5–83) | 36 (6–89) | 0.109 |
| Sex, female | 273 (45%) | 474 (50%) | 0.059 |
| ASA I–IIa | 542 (89%) | 858 (90%) | 0.533 |
| ASA III–IVa | 66 (11%) | 94 (10%) | 0.533 |
| Laparoscopic appendectomy | 427 (70%) | 847 (89%) | < 0.001 |
| Open appendectomy | 181 (29%) | 105 (11%) | < 0.001 |
| Conversion to open surgery | 12 (2.0%) | 13 (1.4%) | 0.351 |
| Uncomplicated appendicitis | 464 (76%) | 701 (74%) | 0.235 |
| Complicated appendicitis | 144 (24%) | 251 (26%) | 0.235 |
| Operation time, minutes (min–max) | 41 (13–213) | 37 (11–137) | < 0.001 |
| Intraoperative bleeding, ml (min–max) | < 5 (0–300) | < 5 (0–510) | 0.743 |
| Morbidity | 37 (6.1%) | 29 (3.0%) | 0.004 |
| Clavien–Dindo I–II | 24 (3.9%) | 20 (2.1%) | 0.031 |
| Clavien–Dindo III–IV | 13 (2.1%) | 9 (0.9%) | 0.051 |
| SSSIb | 4 (0.7%) | 6 (0.6%) | 0.947 |
| O/SSSIc | 21 (3.5%) | 13 (1.4%) | 0.006 |
| O/SSSI (C–Dd III–IV) | 12 (2.0%) | 7 (0.7%) | 0.030 |
| Ileus | 9 (1.5%) | 1 (0.1%) | 0.001 |
| Bleeding | 1 (0.2%) | 2 (0.2%) | 0.841 |
| Pneumonia | 2 (0.3%) | 4 (0.4%) | 0.777 |
| Other | 3 (0.5%) | 3 (0.3%) | 0.579 |
| 30-day mortality | 0 (0.0%) | 2 (0.2%) | 0.258 |
aASA: American Society of Anesthesiologists classification
bSSSI: Superficial surgical site infection
cO/SSI: Organ/space surgical site infection
dC–D: Clavien–Dindo classification