Major depressive disorder in patients with rheumatoid arthritis

Area of Science:

• Rheumatology
• Psychiatry
• Epidemiology

Background:

• Rheumatoid arthritis (RA) is a chronic autoimmune disease associated with significant comorbidities.
• Major Depressive Disorder (MDD) is a common comorbidity in chronic illnesses, impacting patient outcomes.
• Understanding the prevalence and relationship of MDD in RA is crucial for comprehensive patient care.

Purpose of the Study:

• To determine the point prevalence of MDD in patients with RA using a structured diagnostic interview.
• To investigate the association between MDD and key RA disease features, including disease activity and physical dysfunction.

Main Methods:

• A cohort of 162 RA patients from the IORRA survey were assessed using the Mini-International Neuropsychiatric Interview (M.I.N.I.) for MDD diagnosis.
• Depression screening was also performed using the Center for Epidemiologic Studies-Depression (CES-D) scale and a two-question screen.
• RA clinical features were extracted from the IORRA cohort database, and statistical analyses (Wilcoxon rank sum test, Pearson's chi-square test) were employed.

Main Results:

• The point prevalence of MDD, diagnosed via M.I.N.I., was 6.8% among Japanese RA patients.
• Various cut-off points for the CES-D scale yielded prevalence estimates ranging from 7.4% to 23.5%.
• No significant relationship was found between MDD and RA disease activity or physical dysfunction.

Conclusions:

• The point prevalence of MDD in this RA cohort, as determined by the M.I.N.I., is 6.8%.
• Concomitant MDD does not appear to influence disease activity in patients with rheumatoid arthritis.
• Further research may explore the impact of MDD on other aspects of RA patient well-being.