Preference Attributes of ELLIPTA Dry Powder Inhaler (DPI) and HANDIHALER DPI in Subjects With Chronic Obstructive Pulmonary Disease (COPD)

Placebo ELLIPTA is a DPI device containing powder for inhalation, to be inhaled orally once daily for 5-9 days. It contains two strips with 30 blisters per strip - one strip contains lactose monohydrate whereas the other strip contains lactose monohydrate blended with magnesium stearate.

Placebo capsules contain lactose monohydrate in the form of powder for inhalation, to be used with the HANDIHALER inhaler as an oral inhalation once daily for 5-9 days.

Consists of 5 questions to assess subjects' preference of device attributes and dosing regimens. The two versions of the questionnaire ask the same questions, but differ in the ordering of inhalers in their responses.

Consists of 5 questions to assess subjects' preference of device attributes and dosing regimens. The two versions of the questionnaire ask the same questions, but differ in the ordering of inhalers in their responses.