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The prevalence of respiratory system disorders
| Symptom of respiratory system disease |
Children | Adults | ||
| Polluted | Non-polluted | Polluted | Non-polluted | |
| prevalence | prevalence | prevalence | prevalence | |
| rate, % | rate, % | rate, % | rate, % | |
| Cough | 25.00 | 8.06 | 15.97* | 4.48 |
| Phlegm | 15.00 | 1.61 | 6.72 | 2.99 |
| Asthma | 40.00* | 3.22 | 1.68 | 0 |
| Wheeze | 10.00 | 6.56 | 5.04 | 2.99 |
Note.
Ratio with non-polluted group, p<0.05
