Sensitivity and specificity of WHO markers of severe pneumonia for hospitalisation
| Variable | Sensitivity (95% CI) | Specificity (95% CI) |
| Severe pneumonia | 0.304 (0.188 to 0.441) | 0.9 (0.868 to 0.926) |
| Vomiting everything | – | 0.996 (0.984 to 0.999) |
| Convulsions | – | 1 (0.992 to 1.000) |
| Lethargy | – | 1 (0.992 to 1.000) |
| Unconsciousness | – | 1 (0.992 to 1.000) |
| Malnourished | – | 0.987 (0.971 to 0.995) |
| Unable to feed | 0.214 (0.116 to 0.344) | 0.916 (0.886 to 0.940) |
| Stridor | 0.089 (0.030 to 0.196) | 0.991 (0.977 to 0.998) |
| Any sign | 0.179 (0.089 to 0.304) | 0.938 (0.911 to 0.958) |