Fig. 3From: The Tiotropium Safety and Performance in Respimat® (TIOSPIR®) Trial: Spirometry OutcomesForest plot of annual rate of forced expiratory volume in 1 second (FEV1) decline in lung function by baseline characteristics. Abbreviations: BMI = body mass index; FEV1 = forced expiratory volume in 1 second; ICS = inhaled corticosteroid; LABA = long-acting β2-agonist; LAMA = long-acting muscarinic receptor antagonistBack to article page