Dataset from A Multiple Dose Comparison of Tiotropium Inhalation Capsules, Salmeterol Inhalation Aerosol and Placebo in a Six-Month, Double-Blind, Double-Dummy, Safety and Efficacy Study in Patients With Chronic Obstructive Pulmonary Disease (COPD)

To compare the long -term (six month) bronchodilator efficacy and safety of tiotropium inhalation capsules, salmeterol inhalation aerosol and placebo in patients with COPD. A secondary objective of this study was to compare the impact of tiotropium and salmeterol on humanistic and economic health outcomes, such as quality of life, patient preference and Health Resource Utilisation in this patient population.