Table 3 Sensitivity, specificity, PPV, NPV and the level of overtriage
Patient group | Sensitivity % (95% CI) | Specificity % (95% CI) | PPV % (95% CI) | NPV % (95% CI) | Overtriage % (95% CI) |
|---|---|---|---|---|---|
< 18 | 69.6 (65.3–73.6) | 88.5 (87.8–89.1) | 23.1 (20.9–25.3) | 98.3 (98.0–98.6) | 15.5 (13.7–17.5) |
18–65 | 85.8 (84.6–86.8) | 78.4 (78.1–78.7) | 16.4 (15.9–16.9) | 99.1 (99.0–99.2) | 5.1 (4.8–5.4) |
> 65 | 88.0 (86.8–89.2) | 71.6 (71.3–72.0) | 12.8 (12.3–13.2) | 99.2 (99.1–99.3) | 2.3 (1.7–3.0) |
Medical | 91.3 (90.4–92.1) | 68.6 (68.3–68.9) | 12.9 (12.5–13.3) | 99.4 (99.3–99.4) | 2.3 (1.8–2.8) |
Surgical | 77.1 (75.5–78.6) | 86.2 (86.0–86.5) | 20.3 (19.5–21.0) | 98.8 (98.7–98.9) | 9.1 (8.6–9.7) |
All patients | 85.7 (84.8–86.4) | 76.2 (76.0–76.4) | 14.9 (14.5–15.2) | 99.1 (99.0–99.2) | 4.1 (3.9–4.2) |