Table 2. The comparison of baseline data by the Kruskal—Wallis test.
| Parameters | IFN Injection | Control | IFN Nebulization 1 | IFN Nebulization 2 | χ2 | P |
|---|---|---|---|---|---|---|
| Age | 245.49±14.41 | 242.29±14.38 | 244.15±13.36 | 244.17±15.10 | 0.465 | 0.926 |
| Researchers’ coughing score | 6.15±0.156 | 5.79±0.153 | 5.90±0.152 | 5.98±0.148 | 2.867 | 0.413 |
| Parents’ coughing score | 6.88±0.157 | 6.33±0.169 | 6.45±0.155 | 6.58±0.157 | 4.507 | 0.212 |
| Lowell wheezing score | 4.99±0.197 | 4.82±0.170 | 5.30±0.175 | 4.75±0.188 | 8.671 | 0.034 |
| Oxygen saturation | 96.205±0.2256 | 95.945±0.2382 | 94.583±0.7211 | 96.164±0.2202 | 4.679 | 0.197 |