Table 3 Prognostic accuracy of HEWS and NEWS2 for in-hospital mortality—entire cohort of RRT patients (n = 5491)
Characteristic | HEWS ≥ 3 (n = 3181, 57.9%) | HEWS ≥ 5 (n = 2578, 46.9%) | NEWS2 ≥ 5 (n = 3416, 62.2%) |
|---|---|---|---|
Sensitivity (95% CI) | 95.9 (94.9–96.7) | 75.9 (73.9–77.9) | 84.5 (82.8–86.2) |
Specificity (95% CI) | 44.6 (42.9–46.2) | 67.6 (66.1–69.1) | 49.0 (47.4–50.7) |
Positive predictive value (95% CI) | 46.5 (45.7–47.2) | 54.1 (52.8–55.4) | 45.5 (44.5–46.4) |
Negative predictive value (9% CI) | 95.5 (94.5–96.4) | 84.8 (83.7–85.9) | 86.3 (84.9–87.6) |
Positive likelihood ratio (95% CI) | 1.73 (1.68–1.78) | 2.35 (2.22–2.47) | 1.66 (1.60–1.72) |
Negative likelihood ratio (95% CI) | 0.09 (0.07–0.12) | 0.36 (0.33–0.39) | 0.32 (0.28–0.35) |
Number needed to examine (95% CI) | 2.15 (2.12–2.18) | 1.85 (1.81–1.89) | 2.20 (2.16–2.25) |