Table 2.
Primary and secondary outcome by BMI
| Variables | Total (n = 737) | Body mass index (BMI) in 2 categories (kg/m2) | |||||
|---|---|---|---|---|---|---|---|
| BMI < 30 (n = 490) | BMI ≥ 30 (n = 247) | OR unadjusted (95%CI) | p-value (unadjusted) | OR adjusted* (95%CI) | p-value (adjusted*) | ||
| BMI (median, IQR) | 27.5 (8.1) | ||||||
| Any intra-op Complications (yes, %) | 202 (27) | 130 (27) | 72 (29) | 1.13 (0.81–1.60) | 0.50 | 1.24 (0.85–1.81) | 0.27 |
| Grade 0 | 535 (73) | 360 (73) | 175 (71) | ||||
| Grade 1 | 29 (4) | 16 (3) | 13 (5) | ||||
| Grade 2 | 138 (19) | 92 (19) | 46 (19) | ||||
| Grade 3 | 28 (4) | 19 (4) | 9 (4) | ||||
| Grade 4 | 7 (1) | 3 (1) | 4 (2) | ||||
| No post-op complications or CD Grade I/II | 679 (92) | 446 (91) | 233 (94) | ||||
| CD Grade III | 37 (5) | 27 (6) | 10 (4) | ||||
| CD Grade IV | 13 (2) | 11 (2) | 2 (1) | ||||
| CD Grade V | 8 (1) | 6 (1) | 2 (1) | ||||
| CD Grade >/= III | 58 (8) | 44 (9) | 14 (6) | 0.61 (0.33–1.13) | 0.11 | 0.72 (0.37–1.43) | 0.35 |
| Conversion rate (yes, %) | 108 (19) | 70 (19) | 38 (19) | 1.04 (0.67 ± 1.62) | 0.85 | 1.06 (0.65–1.72) | 0.81 |
| ICU admission (yes, %) | 209 (28) | 130 (27) | 79 (32) | 1.30 (0.92–1.80) | 0.12 | 1.35 (0.91–2.07) | 0.15 |
| Length of ICU admission in days (mean ± sd) | 2.6 ± 2.9 | 2.9 ± 3.4 | 2.1 ± 1.6 | 0.42 | 0.29 | ||
| 30-days mortality (yes,%) | 8 (1) | 6 (1) | 2 (1) | 0.63 | 0.59 | ||
| Length of hospital day in days (mean ± sd) | 10.0 ± 8.4 | 10.4 ± 8.7 | 9.3 ± 7.9 | 0.12 | 0.31 | ||
*Adjusted to age, sex, ASA, smoking, operation type, surgical approach (except for conversion rate), operation urgency