Time frame: Baseline at Visit 1 (day 0) and Visit 2 (planned at 12 week, up to a maximum of 42 weeks).
The Chronic Obstructive Pulmonary Disease (COPD) Assessment Test (CATᵀᴹ) was developed as a simple instrument to assess health status in patients with COPD. The CATᵀᴹ consists of eight items, each formatted as a semantic six-point differential scale, making the tool easy to administer and easy for patients to complete. These eight items cover cough, phlegm, chest tightness, breathlessness when going up hills/stairs, activity limitations at home, confidence leaving home, sleep and energy. Each item is scored from 0 to 5. Total CAT score is calculated as the sum over the 8 items, resulting in a total score ranging from 0 to 40, corresponding to the best and worst health status in patients with COPD, respectively. The Minimum Clinically Important Difference (MCID) is a change of 2.0 points. Change is calculated as Visit 1 - Visit 2.