Yu-Hui Chang

Oct 1, 2023 | jrheum.org | Yu-Hui Chang |Matthew R Buras |John Davis |Cynthia S. Crowson

Key Indexing Terms:clustered datacorrelated datamixed modelrepeated measuresstatistical softwareRheumatology research often involves correlated and clustered data. Many consortia and registries, such as the Rheumatology Informatics System for Effectiveness (RISE)1 registry have been formed to pool together data from multiple institutions to effectively study rare diseases.