Dataset from A Randomized, Double-blind, Placebo-controlled, Parallel Group Trial Assessing the Proportion of Patients Experiencing an Exacerbation and Proportion of Patients Hospitalized for an Exacerbation Over 6 Months During Treatment With Tiotropium 18 Mcg Capsule Once Daily in Patients With COPD in a Veterans Affairs Setting

The primary objective of this trial is to determine whether treatment with tiotropium (18 mcg) capsule once daily via the HandiHaler reduces the proportion of patients with COPD experiencing an exacerbation and the proportion of patients hospitalized for an exacerbation during a six month observation period.