Table 1—

Subjects' characteristics

Healthy controlSteroid naiveSteroid treated
Subjects n402320
Sex F:M26:1411:128:12
Age yrs32 (28–35)33 (27–38)35 (29–41)
BDP μg1246 (927–1565)
FEV1 %91 (87–94)85 (81–89)*82 (77–86)**
Asthmatic symptoms# n176
  • Data are presented as mean (95% confidence interval)

  • F: females

  • M: male

  • BDP: daily dose of inhaled steroids as beclomethasone dipropionate equivalents

  • FEV1: forced expiratory volume in one second

  • #: recent worsening of

  • *: p<0.05 versus healthy controls

  • **: p<0.01 versus healthy controls