Table 3—

Change of forced expiratory volume in one second (FEV1) and forced vital capacity (FVC) during the study in a subgroup of 35 children aged ≥11 yrs

FEV1FVC
% pred Z−1.8±3.5−0.4±3.0
% pred K3.5±6.3−0.6±3.2
% pred Q−2.4±3.2−1.2±2.7
% pred W−2.5±3.3)−0.6±3.1

  • Data are presented as mean±sd unless otherwise stated

  • Z: using reference equation described in Zapletal et al. 9

  • K: using reference equation described in Knudson et al. 8

  • Q: using reference equation described in Quanjer et al. 4

  • W: using reference equation described in Wang et al. 6