Key clinical point: Patients with endometriosis are at a significantly higher risk of developing rheumatoid arthritis (RA).
Major finding: The risk of RA was significantly higher in patients with endometriosis (adjusted hazard ratio [aHR], 1.75; 95% confidence interval [CI], 1.27-2.41), those aged 45 years or older (aHR, 1.50; 95% CI, 1.06-2.13), and those with autoimmune disease (aHR, 6.99; 95% CI, 2.84-17.21).
Study details: This 13-year Taiwanese population-based study included 14,463 women with and 14,463 women without endometriosis who were propensity score-matched by age, comorbidities, corticosteroids, nonsteroidal anti-inflammatory drugs, and hormonal medications.
Disclosures: The study was supported by the Chung Shan Medical University’s DryLab Team and grants awarded to Chung Shan Medical University. The authors declared no conflicts of interest.
Source: Xue YH et al. Rheumatology (Oxford). 2020 Dec 17. doi: 10.1093/rheumatology/keaa784 .