Multiple logistic regression for clinical and investigational models
| Independent variables–clinical model | OR | 95% CI | p Value |
|---|---|---|---|
| Cough severity score≥2 | 4.1 | 0.3 to 46.6 | 0.26 |
| Sputum production | 0.7 | 0.2 to 2.5 | 0.59 |
| Fever | 3.1 | 1.2 to 11.1 | 0.04 |
| Hypoxia | 25.5 | 2.0 to 322.6 | 0.01 |
| Chest pain | 0.2 | 0.04 to 1.3 | 0.09 |
| Crepitations/wheeze | 3.3 | 1.1 to 10.2 | 0.03 |
| Age (months) | 0.9 | 0.9 to 1.0 | 0.09 |
| Raised WCC | 3.0 | 0.4 to 20.4 | 0.26 |
| Raised neutrophil % | 2.4 | 0.6 to 9.8 | 0.2 |
| CRP>3 mg/L | 4.7 | 1.7 to 13.1 | 0.003 |
| IL-6>2 ng/L | 1.3 | 0.4 to 4.1 | 0.62 |
Bold typeface means statistically significant at P<0.5.
CRP, C reactive protein; IL-6, interleukin 6; WCC, white cell count.