Use of a "critical difference" statistical criterion improves the predictive utility of the Health Assessment Questionnaire-Disability Index score in patients with rheumatoid arthritis.
Frank BehrensMichaela KoehmEva C SchwaneckMarc SchmalzingHolger GnannGerd GregerHans-Peter TonyHarald BurkhardtPublished in: BMC rheumatology (2019)
ClinicalTrials.gov NCT01076205. Registered on February 26, 2010 (retrospectively registered).