Dataset from Multicentre, Randomised, Double-Blind, Double Dummy, Parallel Group, 104-week Study to Compare the Effect of the Salmeterol/Fluticasone Propionate Combination Product (SERETIDE*) 50/500mcg Delivered Twice Daily Via the DISKUS*/ACCUHALER* Inhaler With Tiotropium Bromide 18 mcg Delivered Once Daily Via the HandiHaler Inhalation Device on the Rate of Health Care Utilisation Exacerbations in Subjects With Severe Chronic Obstructive Pulmonary Disease (COPD)

This is a comparator study to assess the relative efficacy of the combination product fluticasone propionate/salmeterol 50/500 and tiotropium bromide on the rate of exacerbations of chronic obstructive pulmonary disease (COPD) over a two year study interval.