Table 1.
Patient Factors Included in the Model, Distribution, and Associated Mortality Within the Study Population
| Variable | Distribution of Patient Factors in the Study Population (N = 8406) |
Mortality Rate in Each Subgroup |
|---|---|---|
| Age/prematurity status | ||
| Neonate preterm | 288 (3.4) | 47 (16.3) |
| Neonate full term | 1431 (17.0) | 100 (7.0) |
| Infant | 2745 (32.7) | 50 (1.8) |
| Child | 3474 (41.3) | 31 (0.9) |
| Adult | 468 (5.6) | 6 (1.3) |
| Any chromosomal abnormality/syndrome | 1709 (20.3) | 69 (4.0) |
| Weight at surgery | ||
| Underweight | 1866 (22.2) | 90 (4.8) |
| Normal weight | 6266 (74.5) | 142 (2.3) |
| Overweight | 274 (3.3) | 2 (0.7) |
| Preoperative factors | ||
| Mechanical circulatory support | 52 (0.6) | 11 (21.2) |
| Shock | 80 (1.0) | 21 (26.3) |
| Mechanical ventilation | 623 (7.4) | 100 (16.1) |
| Any other | 2181 (26.0) | 109 (5.0) |
| STAT | ||
| Score | 0.5 (0.3–1.3) | |
| Category | ||
| 1 | 2464 (29.3) | 7 (0.3) |
| 2 | 2767 (32.9) | 37 (1.3) |
| 3 | 1070 (12.7) | 24 (2.2) |
| 4 | 1787 (21.3) | 115 (6.4) |
| 5 | 318 (3.8) | 51 (16.0) |
Values are n (%) or median (interquartile range).
STAT, The Society of Thoracic Surgeons–European Association for Cardio-Thoracic Surgery.