Table 2.
Estimated DTA measures (95% CI) of the key indicator symptom combinations Unconscious, alone and with any one or more symptoms: Not Breathing, Ineffective Breathing or Noisy Breathing
| Sensitivity | Specificity | PPV | NPV | |
|---|---|---|---|---|
| Unconscious | 86.0 (80.2–90.5) | 93.4 (89.0–96.2) | 14.0 (8.9–22.7) | 99.8 (99.7–99.9) |
| Unconscious and (A) Noisy Breathing | 23.6 (17.8–30.4) | 98.8 (96.1–99.9) | 19.3 (6.7–67.2) | 99.0 (98.9–99.2) |
| Unconscious and (B) Ineffective Breathing | 51.7 (44.3–58.9) | 97.4 (94.1–99.0) | 20.0 (9.7–40.2) | 99.4 (99.3–99.5) |
| Unconscious and (C) Not Breathing | 53.4 (45.8–60.5) | 98.6 (95.9–99.7) | 33.0 (13.4–71.6) | 99.4 (99.3–99.5) |
| Unconscious and at least one of | ||||
| (B) Ineffective Breathing or (C) Not breathing | 78.1 (71.4–83.8) | 96.2 (92.8–98.2) | 20.5 (11.6–35.4) | 99.7 (99.6–99.8) |
| Unconscious and at least one of (A) Noisy Breathing, | ||||
| (B) Ineffective Breathing or (C) Not Breathing | 79.8 (73.5–85.3) | 95.7 (92.1–97.8) | 18.7 (11.0–32.0) | 99.7 (99.6–99.8) |