Multivariable logistic regression analyses of variables that predict mortality
| Variable | OR | 95% CI | P value |
| Age of patients (months) | |||
| <1 (neonates) | 19.92 | 2.32 to 170.37 | 0.006 |
| 1.1–12 | 2.37 | 0.25 to 23.03 | 0.455 |
| 12.1–60 | 1.94 | 0.21 to 17.95 | 0.558 |
| 60.1–120 | 1.28 | 0.10 to 16.15 | 0.845 |
| 120.1–180 (ref) | 1 | ||
| Type of pathology | |||
| Acquired (ref) | 1 | ||
| Congenital | 12.7 | 3.37 to 47.52 | 0.001 |
| Urgency of surgical procedure | |||
| Elective (ref) | 1 | ||
| Emergency | 17.1 | 5.21 to 60.27 | 0.001 |
| ASA status | |||
| 1 (ref) | 1 | ||
| II | 1.69 | 0.42 to 6.96 | 0.461 |
| III | 7.01 | 1.98 to 24.73 | 0.002 |
| IV–V | 21.6 | 3.05 to 152.91 | 0.002 |
| Multiple operations, n | |||
| 1 (ref) | 1 | ||
| 2–4 | 9.7 | 2.79 to 33.54 | 0.001 |
P values in bold are considered to be statistically significant.
ASA, American Society of Anesthesiologists; CI, confidence interval; OR, odds ratio.