Test-retest reliability of outcome measures: data from three trials in radiographic and non-radiographic axial spondyloarthritis.

ABSTRACT:

Objectives

Aim of this study was to assess test-retest reliability of candidate instruments for the mandatory domains of the Assessment of Spondyloarthritis international Society (ASAS)-Outcome Measures in Rheumatology core set for axial spondyloarthritis (axSpA).

Methods

Screening and baseline data from COAST-V, COAST-X and RAPID-axSpA was used to evaluate test-retest reliability of each candidate instrument for the mandatory domains (disease activity, pain, morning stiffness, fatigue, physical function, overall functioning and health). A maximum time interval of 28 days between both visits was used for inclusion in this study. Test-retest reliability was assessed by intraclass correlation coefficient (ICC). Bland and Altman plots provided mean difference and 95% limits of

SUBMITTER: Boel A 

PROVIDER: S-EPMC8666887 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature