Table 3.
Prognostic validity of different cutoff values of each severity indicator in NHAP
| Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | |
|---|---|---|---|---|
| B/A ratio | ||||
| ≥6 mg/g | 76.0 | 34.5 | 20.4 | 86.7 |
| ≥8 mg/g | 60.0 | 62.8 | 26.3 | 87.7 |
| ≥10 mg/g | 36.0 | 83.2 | 32.1 | 85.5 |
| ≥12 mg/g | 32.0 | 92.9 | 50.0 | 86.1 |
| PSI | ||||
| ≥3 | 100 | 0.9 | 18.2 | 100 |
| ≥4 | 100 | 3.5 | 18.7 | 100 |
| ≥5 | 68.0 | 65.5 | 30.4 | 90.2 |
| CURB-65 | ||||
| ≥2 | 100 | 16.8 | 21.0 | 100 |
| ≥3 | 84.0 | 44.2 | 25.0 | 92.6 |
| ≥4 | 40.0 | 80.5 | 31.3 | 85.8 |
| A-DROP | ||||
| ≥2 | 100 | 19.5 | 21.6 | 100 |
| ≥3 | 84.0 | 46.0 | 25.6 | 92.9 |
| ≥4 | 40.0 | 81.4 | 32.3 | 86.0 |
Abbreviations: A-DROP, age, dehydration, respiratory failure, orientation disturbance, and pressure scale; B/A ratio, blood urea nitrogen to serum albumin ratio; CURB-65, confusion, urea, respiratory rate, blood pressure, and age ≥65 scale; NHAP, nursing-home-acquired pneumonia; NPV, negative predictive value; PPV, positive predictive value; PSI, pneumonia severity index.