Table 1 Baseline characteristics of participating subjects
Characteristics | Numbers | % |
|---|---|---|
Sex: Boys | 110 | 51.2% |
Race/ethnicity: Han | 148 | 68.8% |
Place of birth: Urban | 134 | 62.3% |
Doctor-diagnosed allergic disorders | ||
Asthma | 105 | 48.8% |
Allergic rhinitis | 46 | 21.4% |
Asthma and allergic rhinitis | 64 | 29.8% |