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Variables used in this study by population
| Population | Asthma | Bronchial response | Wheeze history | FEV1 | Eosinophils | Atopy history | Total IgE | Specific IgE | Skin prick |
|---|---|---|---|---|---|---|---|---|---|
| UKS | + | + | + | + | − | + | + | + | + |
| UKO | + | − | − | − | − | − | + | + | + |
| AuB | + | + | − | + | + | − | + | + | + |
| AuP | + | + | + | + | + | − | + | + | − |
| Fin | + | − | − | − | − | − | + | − | − |
| GerM | + | + | + | − | − | − | + | + | + |
| GerF | + | − | − | − | − | − | + | + | + |
| Bar | + | − | − | − | − | + | + | + | − |
| USAA | + | − | − | − | − | − | + | − | − |
| USC | + | − | − | − | − | − | + | − | − |
| China | + | + | − | − | − | − | + | − | + |
