TABLE 1.
Participation and Prevalence of Respiratory Conditions, Allergic Sensitization, Smoking, and LBW
| Age 7–8 y |
Age 11–12 y |
|||
|---|---|---|---|---|
| n | % | n | % | |
| Participation | 3430 | 97.3 | 3389 | 96.5 |
| Current wheeze | 400 | 11.7 | 319 | 9.4 |
| Physician-diagnosed asthma | 197 | 5.7 | 263 | 7.5 |
| Current asthma | 181 | 5.3 | 215 | 6.3 |
| Ever asthma | 218 | 6.4 | 317 | 9.4 |
| Participation in skin test | 2148 | 87.5 | 2155 | 88.4 |
| Allergic sensitization | 443 | 20.6 | 656 | 30.1 |
| Smokinga | ||||
| Prenatal (mother) | 842 | 25.0 | 766 | |
| In first year | ||||
| At least 1 parent | 1224 | 36.7 | 1118 | 36.3 |
| Both parents | 502 | 16.1 | 449 | 15.8 |
| Current | ||||
| At least 1 parent | 1340 | 40.5 | 896 | 29.9 |
| Both parents | 407 | 13.0 | 239 | 7.7 |
| Prenatal and current (mother) | 657 | 19.5 | 541 | 16.6 |
| Prenatal or subsequent (mother) | 1291 | 37.6 | 1284 | 37.9 |
| Birth weighta | ||||
| <2500 g | 139 | 4.1 | 126 | 4.1 |
| <1500 g | 11 | 0.3 | 11 | 0.4 |
a
In the age 11- to 12-year follow-up, these data were limited to children participating both at ages 7 to 8 and 11 to 12 years.