Background:Background: Patient-reported outcomes (PRO) measures should be valid and accessible to a wide audience. Abstract: Objective:Objective: Cognitive item testing and readability studies were conducted to evaluate how adult headache sufferers (N - 9) understood and responded to the...

Background: Qualitative research can inform the development of asthma patient-reported outcome (PRO) measures and user-friendly technologies through defining measurement constructs, identifying potential limitations in measurement and sources of response error, and evaluating usability....