Baseline phenotypic characteristics of index cases in the Childhood Asthma Management Program(CAMP) and the Costa Rican population
| CAMP# | Costa Rican | |
| Subjects n | 493 | 412 |
| Variable | ||
| Mean age yrs | 8.7 (7.0–10.5) | 9.2 (7.8–10.4) |
| Females | 187 (38) | 152 (37) |
| Baseline post-bronchodilator FEV1 L¶ | 1.81±0.5 | 1.84±0.5 |
| Baseline post-bronchodilator FVC L | 2.13±0.6 | 2.15±0.6 |
| Baseline post-bronchodilator FEV1/FVC | 85.62±6.3 | 85.63±6.4 |
| IgE level IU·L−1 | 405.0 (171.0–1061.0) | 422.0 (118.0–975.0) |
| PC20 mg·mL−1 | 1.1 (0.5–2.8) | 1.2 (0.7–1.4) |
| Eosinophil count cells·mm−3 | 411.0 (229.0–700.0) | 530.0 (290.0–805.0) |
Data are presented as median (interquartile range), n (%) and mean±sd, unless otherwise indicated. FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; IgE: immunoglobulin E; PC20: provocative concentration of methacholine causing a 20% fall in FEV1. #: lung function phenotypes presented in the table are unadjusted values; ¶: non-Hispanic white.