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Abstract
Objectives: To study the effect of concurrent psychiatric disorders on health-related quality of life (HRQOL) in patients with rheumatoid arthritis (RA).
Methods: Consecutive Chinese patients who fulfilled the American College of Rheumatology (ACR) criteria for RA were recruited and interviewed by a psychiatrist for psychiatric disorders using the Chinese Bilingual Structured Clinical Interview for DSM-IV Axis I Disorders, Patient version (CB-SCID-I/P). HRQOL was assessed by the validated Chinese version of the 36-item Short Form Health Survey (SF-36). Sociodemographic and clinical data were also collected. Fatigue was assessed by the Functional Assessment of Chronic Illness Therapy – Fatigue scale (FACIT-F).
Results: Two hundred patients with RA were studied (79% women, mean age 51.4 ± 10.5 years; median RA duration 4.0 years). Forty-seven (23.5%) patients were diagnosed with a psychiatric disorder: depressive disorders in 29 patients and anxiety disorders in 26 patients. Patients with either condition had significantly higher fatigue scores (26 ± 8.8 vs. 16 ± 6.9, p < 0.001) and were more likely to be unemployed (p = 0.02) and dependent on government subsidy for living (p < 0.001) than those without. The scores of the eight domains and the physical and mental components of the SF-36 were significantly lower in RA patients with psychiatric disorders (p < 0.001 in all). In a linear regression model, the presence of either depressive or anxiety disorders (β = −0.23, p < 0.001), older age (β = −0.16, p = 0.006), self-perceived pain (β = −0.25, p < 0.001) and fatigue (β = −0.42, p < 0.001) were independently and inversely associated with the total SF-36 score after adjustment for disease activity and other sociodemographic variables.
Conclusions: Concomitant depressive or anxiety disorders in RA patients are associated with significantly poorer HRQOL. Early identification and treatment of psychiatric disorders in RA patients are warranted.
