Table 1.
Comparison of wheeze and asthma among preschool children with different characteristics in Urumqi (n = 8153).
| Characteristics | Number of individuals | Number of wheeze cases | Prevalence (%) | χ2 | P | Number of asthma cases | Prevalence (%) | χ2 | P |
|---|---|---|---|---|---|---|---|---|---|
| Gender | |||||||||
| Boys | 4235 | 227 | 5.4 | 8.30 | < 0.01 | 107 | 2.5 | 10.05 | < 0.01 |
| Girls | 3918 | 157 | 4.0 | 60 | 1.5 | ||||
| Ethnicity | |||||||||
| Han Chinese | 7081 | 312 | 4.4 | 11.07 | < 0.01 | 131 | 1.9 | 10.56 | < 0.01 |
| Other | 1072 | 72 | 6.7 | 36 | 3.4 | ||||
| Age (years) | |||||||||
| 2 ~ 4 | 1033 | 46 | 4.5 | 0.22 | 0.90 | 23 | 2.2 | 0.37 | 0.83 |
| 4 ~ 6 | 4828 | 231 | 4.8 | 100 | 2.1 | ||||
| 6 ~ 8 | 2292 | 107 | 4.7 | 44 | 1.9 | ||||
| Type of birth delivery | |||||||||
| Normal childbirth | 4187 | 178 | 4.3 | 4.04 | 0.05 | 73 | 1.7 | 3.99 | 0.05 |
| Cesarean delivery | 3966 | 206 | 5.2 | 94 | 2.4 | ||||
| Only child | |||||||||
| Yes | 3584 | 169 | 4.7 | 0.00 | 0.98 | 69 | 1.9 | 0.48 | 0.49 |
| No | 4569 | 215 | 4.7 | 98 | 2.1 | ||||
| Total | 8153 | 384 | 4.7 | 167 | 2.0 | ||||