Interleukin-13 receptor α1 subunit -281T/1365A haplotype association with atopy and asthma phenotypes in asthmatic family members
| Mother | Father | First sister | First brother | |
| Subjects n | 100 | 85 | 216 | 245 |
| Log total IgE# | 0.049 | 0.160 | 0.768 | 0.600 |
| FEV1 % pred | 0.753 | 0.200 | 0.832 | 0.856 |
| BHR slope¶ | 0.420 | 0.808 | 0.870 | 0.442 |
| Atopy severity score | 0.700 | 0.300 | 0.640 | 0.432 |
| Asthma severity score | 0.120 | 0.571 | 0.830 | 0.956 |
Data presented are p-values, unless otherwise stated. Ig: immunoglobulin; FEV1: forced expiratory volume in one second; % pred: % predicted; BHR: bronchial hyperresponsiveness. #: age-corrected; ¶: FEV1 response to methacholine.