Height blocks of PTT: results by ISS, NISS, and presence of one or more Garner criteria
| Height block (cm) | ISS (%) | 95% CI | NISS (%) | 95% CI | Garner (%) | 95% CI | |
|---|---|---|---|---|---|---|---|
| 50–80 | Sensitivity | 21.7 | 11.3–27.9 | 16.1 | 8.3–20.7 | 25 | 13–32.1 |
| Specificity | 99.6 | 99.1–99.9 | 99.6 | 99.1–99.9 | 99.6 | 99.1–99.9 | |
| Overtriage | 28.6 | 8.4–62.9 | 28.6 | 8.3–63.3 | 28.6 | 8.4–62.8 | |
| Undertriage | 3.4 | 3.2–3.9 | 5 | 4.7–5.4 | 2.9 | 2.6–3.3 | |
| 80–100 | Sensitivity | 20 | 12–27.6 | 19 | 12.4–24.1 | 23.6 | 16.6–27.9 |
| Specificity | 99 | 98.6–99.4 | 99.3 | 98.8–99.6 | 99.5 | 99–99.8 | |
| Overtriage | 47.1 | 27–67.2 | 35.3 | 17.7–57.8 | 23.5 | 9.7–46.2 | |
| Undertriage | 3.3 | 3.9–4.7 | 5.6 | 5.2–6.0 | 5 | 4.7–5.4 | |
| 100–140 | Sensitivity | 50.6 | 42.4–57.9 | 30.5 | 26.1–34 | 54.7 | 47.4–60.8 |
| Specificity | 98.2 | 97.8–98.6 | 98.7 | 98.2–99.1 | 98.7 | 98.3–99.1 | |
| Overtriage | 38.9 | 30–42.8 | 26.4 | 17.9–36.8 | 27.8 | 19.8–37.4 | |
| Undertriage | 2.7 | 2.3–3.2 | 7.56 | 7.2–8.1 | 2.7 | 2.3–3.1 | |
| >140 | Sensitivity | 39.4 | 28.2–46.4 | 25.5 | 18–30.1 | 43.3 | 31.2–51 |
| Specificity | 98.9 | 97.9–99.5 | 98.9 | 97.8–99.5 | 98.9 | 98–99.5 | |
| Overtriage | 23.5 | 8.9–45.2 | 23.5 | 9.7–46 | 23.5 | 10–44.5 | |
| Undertriage | 5.2 | 4.6–6.1 | 9.8 | 9.2–10.8 | 4.4 | 3.8–5.3 | |