2

Patient characteristics at screening

PlaceboSalmeterolTiotropium
Total randomised n400405402
Males %767577
Age yrs64.664.163.8
Duration of COPD yrs9.89.99.0
Current smokers %42.336.342.3
Baseline spirometry
 FEV1 L1.09±0.401.07±0.381.12±0.39
 FEV1 % pred#40.6±12.839.4±12.241.0±12.2
 FVC L2.60±0.782.55±0.772.59±0.75
 FEV1/FVC %42.3±9.242.2±9.543.7±9.7
  • Data are presented as mean±sd unless otherwise stated

  • COPD: chronic obstructive pulmonary disease

  • FEV1: forced expiratory volume in one second

  • FVC: forced vital capacity

  • pred: predicted

  • #: Morris criteria