Table 2.
Summary of Mortality Predictors Sorted by their Contribution to the Model’s Predictive Performance (Wald χ2 test statistic)
| All Patients (n = 87,665)
|
Excluding Patients with Total Burn Size or Full Thickness Burn Size = 0% or unknown (n = 11,356)
|
|||||
|---|---|---|---|---|---|---|
| Analysis of effects | Degrees of freedom | Wald χ2 test statistic | P value | Degrees of freedom | Wald χ2 test statistic | P value |
| Age group | 8 | 1,586.3 | <0.0001 | 8 | 593.8 | <0.0001 |
| Admitting facility | 56 | 501.9 | <0.0001 | 56 | 148.4 | <0.0001 |
| Inhalation injury | 1 | 309.8 | <0.0001 | 1 | 110.7 | <0.0001 |
| Total burn size | 4 | 362.1 | <0.0001 | 3 | 100.3 | <0.0001 |
| Full thickness burn size | 5 | 263.2 | <0.0001 | 4 | 157.3 | <0.0001 |
| Model performance | ||||||
| C statistic | 0.82 | 0.95 | ||||
| Maximum adjusted R2 | 0.25 | 0.59 | ||||