Study Status: Completed
Recruit Status: Completed
Study Type: Observational
Official Title: Validation of Manual Muscle Testing and the Myositis Activity Profile Assessments in Patients With Inflammatory Myositis
Brief Summary: The aim of the study is to evaluate the psychometric properties (content and construct validity, reliability, measurements error, as well as possible floor and ceiling effects) of both the assessments MMT8 and the myositis activity profile in patients with IM.