Table 4
Comparison of areas under the ROC curves and prediction of frequent cough
| Predictor | ROC area | p Value |
|---|---|---|
| ROC, Receiver operator characteristic; PMA, postmenstrual age. | ||
| Gestational age | 0.54 | 0.47 |
| Birth weight | 0.49 | 0.81 |
| Maternal smoking | ||
| In pregnancy | 0.52 | 0.59 |
| After birth | 0.49 | 0.76 |
| Family history of atopy | 0.43 | 0.12 |
| Duration of | ||
| Ventilation | 0.56 | 0.22 |
| Supplementary oxygen | 0.55 | 0.41 |
| Oxygen dependency | ||
| At 28 days | 0.51 | 0.67 |
| At 36 weeks | 0.54 | 0.28 |
| At discharge | 0.55 | 0.23 |
| Chest radiograph score at 28 days | ||
| Total | 0.55 | 0.31 |
| Fibrosis | 0.56 | 0.19 |
| Cystic elements | 0.52 | 0.44 |
| Hyperinflation | 0.50 | 0.94 |
| Chest radiograph score at 36 weeks PMA | ||
| Total | 0.57 | 0.15 |
| Fibrosis | 0.58 | 0.12 |
| Cystic elements | 0.54 | 0.12 |
| Hyperinflation | 0.51 | 0.77 |
