| Multivariate Analysis OR (95% CI) n = 1,624 | β Coefficient | Risk Score†|
---|---|---|---|
Age (years) | Â | Â | Â |
≤ 50 | 1 |  |  |
51 - 80 | 1.4 (0.6 - 3.3) | 0.331 | 3 |
>80 | 5.1 (1.9 - 13.3) | 1.619 | 16 |
Pre-operative (SpO2, %) | Â | Â | Â |
≥ 96 | 1 |  |  |
91 - 95 | 2.2 (1.2 - 4.2) | 0.802 | 8 |
≤ 90 | 10.7 (4.1 - 28.1) | 2.375 | 24 |
Respiratory infection | 5.5 (2.6 - 11.5) | 1.698 | 17 |
in the last month | Â | Â | Â |
Pre-operative anemia (≤ 10 g/dl) | 3.0 (1.4 - 6.5) | 1.105 | 11 |
Surgical incision | Â | Â | Â |
Peripheral | 1 | Â | Â |
Upper abdominal | 4.4 (2.3 - 8.5) | 1.480 | 15 |
Intra-thoracic | 11.4 (4.9 - 26.0) | 2.431 | 24 |
Duration of surgery (hours) | Â | Â | Â |
≤ 2 | 1 |  |  |
2 - 3 | 4.9 (2.4 - 10.1) | 1.593 | 16 |
>3 | 9.7 (4.7 - 19.9) | 2.268 | 23 |
Emergency procedure | 2.2 (1.0 - 4.5) | 0.768 | 8 |
High or intermediate risk for postoperative pulmonary complications following abdominal surgery: risk score ≥ 26 |