Table 2.
Peri-operative outcomes according to different body mass index (BMI) groups
| BMI <26 n = 170 | BMI 26–40 n = 553 | BMI <40 n = 76 | Total N = 799 | P-value | |
|---|---|---|---|---|---|
| Median DOS, min (IQR) | 64 (54–83) | 72 (58–92) | 82 (63–104) | 70 (56–91) | <0.001 |
| Median LOS, days (IQR) | 1.1 (1.0–1.3) | 1.1 (1.0–1.3) | 1.1 (1.0–1.3) | 1.1 (1.1–1.3) | 0.269 |
| Conversion, n (%) | 1 (0.6) | 2 (0.4) | 1 (1.3) | 4 (0.5) | 0.244 |
| Post-op complications, n (%) | 8 (4.7) | 25 (4.5) | 6 (7.9) | 39 (4.9) | 0.411 |
| Biliary complications, n (%) | 0 (0) | 4 (0.7) | 0 (0) | 4 (0.5) | 0.718 |
| Cholangiogram, n (%) | 143 (84) | 457 (83) | 61 (80) | 661 (83) | – |
| Operator, n (%) | |||||
| Consultant | 114 (67) | 361 (65) | 52 (68) | 527 (66) | 0.820 |
| Fellow | 21 (12) | 86 (16) | 11 (15) | 118 (15) | |
| Registrar | 35 (21) | 106 (19) | 13 (17) | 154 (19) | |
DOS, duration of surgery; LOS, length of hospital stay.