Predictive value of scores for admission to ICU
| Severity score | Sensitivity(95% CI) | Specificity(95% CI) | PPV(95% CI) | NPV(95% CI) (%) | Area under ROC |
|---|---|---|---|---|---|
| ROC, receiver operator characteristics curve. | |||||
| PSI class V | 48.0 (27.8 to 68.7) | 79.0 (74.5 to 83.1) | 13.6 (7.2 to 22.6) | 95.6 (92.7 to 97.6) | 0.69 (0.59 to 0.77) |
| PSI class IV+V | 84.0 (63.9 to 95.4) | 45.4 (40.2 to 50.7) | 9.6 (6.0 to 14.3) | 97.6 (94.0 to 99.3) | 0.69 (0.59 to 0.77) |
| CURB (⩾2) | 84.0 (63.9 to 95.4) | 56.2 (50.9 to 61.3) | 11.7 (7.3 to 17.2) | 98.1 (95.1 to 99.4) | 0.76 (0.68 to 0.84) |
| CURB-65 (⩾3) | 57.7 (36.9 to 76.6) | 64.7 (59.6 to 69.6) | 10.4 (5.9 to 16.6) | 95.5 (92.2 to 97.7) | 0.66 (0.56 to 0.76) |
| Modified BTS | 96.0 (79.6 to 99.9) | 48.7 (43.5 to 54.0) | 11.4 (7.4 to 16.5) | 99.4 (96.9 to 99.9) | 0.72 (0.67 to 0.76) |
| rATS | 92.0 (73.9 to 99.0) | 87.3 (83.4 to 90.5) | 33.3 (22.4 to 45.7) | 99.3 (97.7 to 99.4) | 0.90 (0.81 to 0.94) |