Table 2

Baseline characteristics at survey 1 of the selected group in the present data analysis and the remaining group

Selected groupRemaining group
(n=498)(n=220)p value
AHR = airway hyperresponsiveness; FEV1 = forced expiratory volume in 1 second; FVC = forced vital capacity.
Male (%)51.455.00.37
Atopy (%)22.323.20.79
AHR (%)9.09.60.83
Recent wheeze (%)9.811.80.42
Mean (SD) FEV1 (l)1.78 (0.32)1.80 (0.30)0.50
Mean (SD) FVC (l)1.97 (0.36)1.99 (0.34)0.53
Mean (SD) FEV1/FVC ratio0.91 (0.06)0.91 (0.05)0.93