Pooled performance characteristics of severity scores for predicting mortality in community-acquired pneumonia
| Sensitivity | Specificity | PLR | NLR | DOR | AUROC | |
| PSI | ||||||
| ≥III | 98.2% (97.8–98.5%) | 38.8% (38.4–39.2%) | 1.4 (1.3 to 1.6) | 0.08 (0.06 to 0.12) | 18.1 (11.5 to 28.5) | 0.88 (0.02) |
| ≥IV | 91.4% (90.8–92.1%) | 49.5% (49.2–49.9%) | 1.9 (1.8 to 2.0) | 0.2 (0.17 to 0.24) | 9.6 (8.0 to 11.6) | 0.82 (0.01) |
| ≥V | 63.2% (62.1–64.3%) | 83.6% (83.4–83.9%) | 4.1 (3.7 to 4.5) | 0.5 (0.44 to 0.58) | 8.4 (7.2 to 9.8) | 0.81 (0.01) |
| CURB65 | ||||||
| ≥1 | 98.6% (97.6–99.2%) | 26.5% (26.5–27.4%) | 1.2 (1.1 to 1.3) | 0.10 (0.06 to 0.16) | 13.6 (9.3 to 22.3) | 0.86 (0.02) |
| ≥2 | 89.1% (87.1–90.8) | 52.2% (51.3–53.1%) | 1.7 (1.5 to 1.9) | 0.21 (0.15 to 0.30) | 8.3 (5.8 to 11.9) | 0.81 (0.02) |
| ≥3 | 62.0% (59.3–64.6%) | 80.8% (80.2–81.4%) | 3.1 (2.7 to 3.5) | 0.46 (0.40 to 0.54) | 7.0 (5.8 to 8.3) | 0.79 (0.01) |
| ≥4 | 29.0% (26.3–31.8%) | 95.3% (95.0–95.7%) | 5.4 (4.4 to 6.6) | 0.73 (0.65 to 0.83) | 7.8 (6.3 to 9.6) | 0.80 (0.01) |
| CRB65 | ||||||
| ≥1 | 94.4% (94.2–94.6%) | 38.3% (38.1–38.5%) | 1.3 (1.2 to 1.5) | 0.15 (0.10 to 0.22) | 9.4 (5.8 to 15.3) | 0.82 (0.03) |
| ≥2 | 72.7% (69.3–76.0%) | 70.8% (69.8–71.8%) | 2.4 (1.9 to 3.0) | 0.39 (0.28 to 0.54) | 6.3 (4.4 to 9.2) | 0.78 (0.02) |
| ≥3 | 29.1% (28.8–29.5%) | 90.9% (90.8–91.0%) | 4.4 (3.6 to 5.5) | 0.72 (0.66 to 0.79) | 6.9 (4.9 to 9.5) | 0.79 (0.02) |
AUROC, area under the receiver operator characteristic curve; DOR, diagnostic OR; NLR, negative likelihood ratio; PLR, positive likelihood ratio; PSI, Pneumonai Severity Index.