Rising? trends in Anxiety and Depression among Individuals with Rheumatoid Arthritis: A Population-Based Study.

OBJECTIVE To investigate trends in depression and anxiety over three decades among individuals with rheumatoid arthritis (RA). METHODS Patients with incident RA (age >18 years, meeting 1987 ACR criteria in 1985-2014) were identified using the Rochester Epidemiology Project. Individuals with RA were matched 1:1 with non-RA comparators on age, sex, and calendar year of RA incidence. Patients were followed until death, migration or 12/31/2020. Depression and anxiety were defined using established ICD9/10 code sets. Cox models were used to compare trends in the occurrence of depression and anxiety diagnoses and cooccurring anxiety and depression by decade and RA status, adjusted for potential confounders. RESULTS The study included 1,012 individuals with RA and 1,012 matched controls (mean age 55.9 years; 68.38% female). Hazard ratios (HR) demonstrated a temporal increase in anxiety and co-occurring anxiety and depression from 2005-2014 compared to 1985-1994 for individuals both with and without RA. Persons with RA exhibited a rising occurrence of anxiety (HR: 1.27; 95% confidence interval (CI): 0.86-1.88). and concomitant anxiety and depression (HR: 1.49; 95% CI: 0.96-2.33) compared to controls. Trends were most pronounced in seropositive RA patients (HR for anxiety: 4.01; 95% CI: 2.21-7.30). CONCLUSION Anxiety and concomitant anxiety and depression diagnoses are elevated in individuals with RA. The increasing occurrence of anxiety and co-occurring anxiety and depression suggests rising awareness and diagnosis of these disorders. Adding to stable but high rates of depression diagnoses, individuals with RA now have evidence of a widening gap in mental health diagnoses that clinicians should address.