Table 2—

Functional and clinical characteristics of the subjects at baseline(pre-) and after 6 weeks of treatment (post-) with continuous positive airway pressure (CPAP)

Pre-CPAPPost-CPAP
FEV1 % pred82.2±13.680.4±13.6
FEV1/FVC %77.3±8.376.3±10.1
PC20 mg·mL-12.2 (1.3–3.5)2.5 (1.4–4.5)
AHI48.1±23.62.6±2.5***
QOLAs5.0±1.25.8±0.9***
QOLAp4.1±1.46.0±1.0***
  • Data are presented as mean±sd or geometric means (95% confidence interval), i.e. average of three individual geometric means before and after CPAP. FEV1: forced expiratory volume in one second; % pred: % predicted; FVC: forced vital capacity; PC20: provocative methacholine concentration causing a 20% fall in FEV1; AHI: apnoea/hypopnoea index; QOLAs: quality of life specific to asthma; QOLAp: quality of life specific to obstructive sleep apnoea. ***: p≤0.001.