Assessing the content validity of a Patient Reported Outcome Measure item pool for Rheumatoid Arthritis Disease Activity using cognitive interviews.

ABSTRACT:

Objectives

Using Rasch measurement theory, an item pool of 12 questions has been identified, covering tenderness and swelling, disease activity, pain, physical functioning and stiffness for assessing the construct of RA disease activity. This study aimed to assess the content validity of this item pool using cognitive interviews.

Methods

Participants were randomly sampled across varying age, sex and education level categories from respondents to a survey containing RA disease activity Patient-Reported Outcome Measures. The 'think aloud' technique was used to understand how individual items were interpreted and answered the 12 items of the item pool plus 12 additional relevant items that could potentially be included. Participants were asked about relevance, comprehensiveness

SUBMITTER: Pickles T 

PROVIDER: S-EPMC12671878 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature