A Study to Evaluate Conceptual Saturation of Evaluating Respiratory Symptoms (E-RS) in Subjects With Asthma

Qualitative concept elicitation telephone interviews will be conducted in subjects with asthma.

E-RS questionnaire will directly measure respiratory symptom severity.

Supplemental asthma items will include one question on wheeze and an item on breathlessness with activities to evaluate shortness of breath associated with strenuous activities.

Subjects will complete a daily diary including the E-RS: COPD and supplemental asthma items for 7 days.

Sociodemographic questionnaire will capture subject's demographic characteristics, including age, gender, and the highest level of educational attainment.

Clinical questionnaire will capture subject's clinical characteristics including the number of asthma exacerbations in the past 12 months, absenteeism due to asthma in the past month, and the presence of comorbid conditions.