Table 3.
The association of USINCHILD score with the rate of complicated respiratory infections
| Comparison between rate of complicated CAP and change of USINCHILD score | ||||
|---|---|---|---|---|
| US Grade ∆¥ < 1 | US Grade ∆¥ ≥ 1 | p value | ||
| Uncomplicated CAP | 5 | 22 | 27 | 0.0001 |
| Complicated CAP | 8 | 1 | 9 | |
| Tot | 13 | 23 | 36 | |
| Logistic regression of rate of complicated CAP | ||||
| Variable | Odds ratio | Standard error | 95% conf. interval | p value |
| US Grade ∆¥ ≥ 1 | 0.0038 | 0.0095 | (0.0000–0.5259) | 0.027 |
| ∆ WBC ** | 1.0216 | 0.1148 | (0.8197–1.2734) | 0.849 |
| ∆ CRP *** | 0.9841 | 0.0094 | (0.9659–1.0027) | 0.093 |
| Sex | 3.2793 | 4.7661 | (0.1900–56.6128) | 0.414 |
| Age | 1.3290 | 0.2346 | (0.9403–1.8784) | 0.107 |
| ROC curve analysis | ||
|---|---|---|
| US grade Δ¥ | Specificity | Sensitivity |
| − 1 | 0 | 0.1111 |
| 0 | 0.1852 | 0.8889 |
| 1 | 0.4815 | 0.8889 |
| 2 | 0.8519 | 0.8889 |
| 3 | 0.963 | 1 |
| 4 | 1 | 1 |
¥US Grade ∆: difference between USINCHILD score after 48hours and at admission
*Fisher's exact test.
**∆WBC: the difference between WBC evaluated after 48h of follow–up and WBC at admission
***∆CRP: the difference between CRP evaluated after 48h of follow–up and CRP at admission