Predictive value of clinical signs for hypoxaemia (Spo2 <88%) in the sick children (1 month to 5 years)
| Sign | Number with sign/number recorded | Odds ratio (95% CI) | p value | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|---|---|
| Not feeding | 119/349 | 2.3 (1.4–3.7) | <0.001 | 41.9 | 76.2 | 69.7 | 50.0 |
| Cyanosis | 78/356 | 31.5 (9.7–102.3) | <0.001 | 37.9 | 98.1 | 96.2 | 55.8 |
| Reduced activity | 128/336 | 1.7 (1.1–2.7) | 0.02 | 43.5 | 69.2 | 65.6 | 47.6 |
| Respiratory rate >60 | 180/359 | 5.0 (3.2–7.8) | <0.001 | 67.0 | 71.1 | 74.4 | 63.1 |
| Failed to resist examination | 100/346 | 1.0 (0.6–1.6) | 0.96 | 29.0 | 44.3 | 56.0 | 44.3 |
| Head nodding | 27/356 | 3.0 (1.2–7.7) | 0.02 | 10.7 | 96.2 | 77.8 | 46.5 |
| Grunting | 64/358 | 1.8 (1.0–3.2) | 0.04 | 21.6 | 86.8 | 67.2 | 46.9 |