Table 4 Results of Multivariate Logistic regression for training cohort
N | Event N | OR | 95% CI | P value | |
|---|---|---|---|---|---|
Age | |||||
18–64 | 5,524 | 66 | — | — | |
< 18 | 141 | 13 | 7.91 | 3.84, 15.29 | < 0.001 |
> 64 | 4,372 | 69 | 1.29 | 0.90, 1.85 | 0.170 |
ASA physical status | |||||
Class II | 708 | 8 | — | — | |
Class III | 8,647 | 105 | 1.25 | 0.62, 2.90 | 0.569 |
Class IV | 653 | 33 | 9.19 | 4.10, 22.92 | < 0.001 |
Class V | 29 | 2 | 11.42 | 1.53, 55.22 | 0.005 |
BMI | |||||
18.5–25 | 5,521 | 65 | — | — | |
< 18.5 | 567 | 23 | 2.74 | 1.60, 4.54 | < 0.001 |
> 25 | 3,352 | 43 | 1.15 | 0.77, 1.71 | 0.487 |
Stay in bed | 597 | 17 | 2.17 | 1.19, 3.75 | 0.008 |
Complications | |||||
N.A. | 4,633 | 30 | — | — | |
I.A. | 5,404 | 118 | 4.94 | 3.17, 7.96 | < 0.001 |
Type of surgery | |||||
Elective | 8,592 | 101 | - | - | |
Emergency | 1,445 | 47 | 1.91 | 1.29, 2.81 | 0.001 |
Intraoperative blood loss | |||||
< 1000 | 9,309 | 97 | - | - | |
1000–2000 | 444 | 21 | 4.25 | 2.50, 6.91 | < 0.001 |
2000–3000 | 180 | 26 | 14.76 | 8.79, 24.09 | < 0.001 |
> 3000 | 104 | 4 | 3.28 | 0.96, 8.45 | 0.029 |