Predictive value of scores for combined outcomes (death and/or ICU admission*) using only those patients with an admission and discharge diagnosis of pneumonia (n = 347)†
| Severity score | Sensitivity(95% CI) | Specificity(95% CI) | PPV(95% CI) | NPV(95% CI) (%) | Area under ROC |
|---|---|---|---|---|---|
| *Where ICU is defined as requirement for invasive or non-invasive ventilation and/or inotropic support not judged to be due to another cause. | |||||
| †Excluding nursing home residents, patients aged >90 years, and patients considered unsuitable for aggressive treatment at presentation (due to advanced irreversible co-morbidities). | |||||
| PSI class V | 54.5 (40.5 to 68.0) | 82.5 (78.0 to 86.4) | 33.7 (24.0 to 44.5) | 91.8 (88.0 to 94.5) | 0.78 (0.71 to 0.84) |
| PSI class IV+V | 89.0 (77.7 to 95.9) | 49.2 (43.8 to 54.7) | 22.2 (16.9 to 28.4) | 96.5 (92.5 to 98.7) | 0.78 (0.71 to 0.84) |
| CURB (⩾2) | 80.0 (67.0 to 89.6) | 59.6 (54.2 to 64.9) | 24.4 (18.2 to 31.4) | 94.8 (90.9 to 97.4) | 0.80 (0.72 to 0.88) |
| CURB-65 (⩾3) | 70.9 (57.1 to 82.4) | 68.8 (63.6 to 73.8) | 27.1 (20.0 to 35.1) | 93.6 (89.7 to 96.3) | 0.74 (0.64 to 0.83) |
| Modified BTS | 98.2 (90.3 to 99.9) | 51.9 (46.5 to 57.4) | 25.0 (19.3 to 31.3) | 99.4 (96.8 to 99.9) | 0.69 (0.63 to 0.75) |
| rATS | 58.2 (44.4 to 71.3) | 88.7 (84.8 to 91.9) | 45.7 (33.7 to 58.0) | 92.8 (89.5 to 95.4) | 0.82 (0.73 to 0.91) |