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Comparison of time for improvement of symptoms of the two groups (mean ± SD)/(days).
| Groups | Chest X-ray inflammatory absorption time | Fever clearance time | Disappearance time of cough | Disappearance time of pulmonary rales |
|---|---|---|---|---|
| Observation (n=79) | 8.29±2.02 | 3.17±0.76 | 7.24±1.68 | 9.89±1.97 |
| Control (n=70) | 10.12±2.98 | 5.01±0.67 | 10.06±1.77 | 11.03±2.07 |
| χ2 value | 4.430 | 15.590 | 9.972 | 3.442 |
| P-value | <0.001 | <0.001 | <0.001 | <0.001 |
