Table 6. Performance of the severity scores in predicting death before ICU discharge, stratified by Indigenous status.
| Severity score | Number of Indigenous patients in whom the score could be calculated | AUROC (95% CI) | Optimal cut-off in Indigenous patients | Number of Non- Indigenous patients in whom the score could be calculated | AUROC (95% CI) | Optimal cut-off in Non-Indigenous patients | p |
|---|---|---|---|---|---|---|---|
| qSOFA | 116 (80%) | 0.71 (0.57–0.84) | 2 | 232 (78%) | 0.58 (0.46–0.70) | 2 | 0.17 |
| SOFA | 120 (83%) | 0.75 (0.64–0.87) | 10 | 258 (87%) | 0.72 (0.63–0.80) | 10 | 0.62 |
| ANZROD | 138 (95%) | 0.85 (0.77–0.92) | 0.33 | 292 (98%) | 0.79 (0.71–0.87) | 0.35 | 0.32 |
| APACHE-II | 138 (95%) | 0.78 (0.64–0.91) | 30 | 292 (98%) | 0.76 (0.67–0.84) | 27 | 0.61 |
| APACHE-III | 138 (95%) | 0.84 (0.76–0.92) | 82 | 292 (98%) | 0.79 (0.71–0.87) | 88 | 0.37 |
| SAPS-II | 136 (94%) | 0.80 (0.70–0.90) | 46 | 277 (93%) | 0.85 (0.78–0.92) | 66 | 0.40 |
qSOFA: quick SOFA score; SOFA: Sequential Organ Failure Assessment score; ANZROD: Australia and New Zealand Risk Of Death score; APACHE-II: Acute Physiology, Age, Chronic Health Evaluation-II score; and APACHE-III: Acute Physiology, Age, Chronic Health Evaluation-III score; SAPS-II: Simplified Acute Physiology Score.