Characteristics according to sex and pubertal status at follow-up of 324 children without a history of asthma at the first survey
| Subject characteristics | Male children | Female children | ||
| Prepuberty | Postpuberty | Prepuberty | Postpuberty | |
| Subjects n | 72 | 84 | 62 | 106 |
| Age yrs | 12.4±1.6 | 14.4±1.5 | 11.6±1.4 | 14.5±1.2 |
| Height cm | 153.1±12.1 | 167.1±9.5 | 147.3±9.4 | 161.3±7.1 |
| Tried smoking % | 24.7 | 47.0 | 15.3 | 57.8 |
| BHR %# | 29.2 | 25.0 | 14.2 | 33.1 |
Data are presented as mean±sd unless otherwise stated
#: Bronchial hyperresponsiveness (BHR) to methacholine defined as a ≥15% drop in forced expiratory volume in one second after inhalation of ≤12 µg of methacholine