Severity Score Risk Classification | Score | N | Predicted Mortality (%) | Observed Mortality (%) (95% Confidence Interval) | C-statistic |
---|---|---|---|---|---|
CURB-65 (N = 1011) | |||||
Low risk | 0 or 1 | 848 | 1.5 | 6.4 (4.8–8.2) | 0.594 |
Intermediate risk | 2 | 140 | 9.2 | 12.7 (7.8–19.6) | |
High risk | ≥3 | 23 | 22.0 | 34.8 (15.3–54.3) | |
CRB-65 (N = 1332) | |||||
Low risk | 0 | 905 | 1.2 | 6.5 (5.0–8.3) | 0.548 |
Intermediate risk | 1 or 2 | 427 | 8.2 | 9.6 (7.0–12.8) | |
High risk | 3 or 4 | 0 | 31.0 | 0 | |
CTA (N = 1011) | |||||
Stage 1 | − | 815 | 2.3 | 6.9 (5.2–8.8) | 0.569 |
Stage 2 | − | 114 | 5.8 | 7.0 (3.1–13.4) | |
Stage 3 | − | 25 | 12.9 | 36.0 (18.0–57.5) | |
Stage 4 | − | 52 | 22.0 | 7.7 (2.1–18.5) | |
Stage 5 | − | 5 | 40.5 | 60.0 (14.7–94.7) | |
CURB-45 (N = 1011) | |||||
Low risk | 0 or 1 | 751 | − | 4.9 (3.5–6.7) | 0.666 |
Intermediate risk | 2 | 204 | − | 12.8 (8.5–18.1) | |
High risk | ≥3 | 56 | − | 21.3 (18.8–44.1) |