Increased Risk of Sjögren’s Syndrome in Patients with Obsessive-Compulsive Disorder: A Nationwide Population-Based Cohort Study

Yi-Jung Chang, Jui-Cheng Tseng, Pui-Ying Leong, Yu-Hsun Wang and James Cheng-Chung Wei
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Yi-Jung Chang: Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
Jui-Cheng Tseng: Division of Allergy, Immunology and Rheumatology, Department of Medicine, Kaohsiung Veterans General Hospital, Kaohsiung 81362, Taiwan
Pui-Ying Leong: Division of Allergy, Immunology and Rheumatology, Department of Medicine, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
Yu-Hsun Wang: Department of Medical Research, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
James Cheng-Chung Wei: Division of Allergy, Immunology and Rheumatology, Department of Medicine, Chung Shan Medical University Hospital, Taichung 40201, Taiwan

IJERPH, 2021, vol. 18, issue 11, 1-10

Abstract: Obsessive-compulsive disorder (OCD) includes a wide range of symptoms and is often associated with comorbidities. Although psychiatric involvement may be an early manifestation of Sjögren’s syndrome (SS), only a few studies have demonstrated the relationship between OCD and SS. This is a nationwide cohort study identifying the risk of SS in OCD patients. We studied a longitudinal health insurance database for the period from 1999 to 2013. The study group was OCD patients with at least three outpatient visits or one hospitalization. The comparison cohort was matched by age and sex, as well as comorbidities. We calculated the risk of Sjögren’s syndrome using Cox proportional hazard regression models. We performed a propensity score match for confounders and effect modifiers between the two groups. The propensity score probability was estimated through logistic regression. Primary outcome was the incidental SS. A total of 1678 patients with OCD (49% women, mean age: 35.6 years) and 3356 controls were followed up, resulting in 13,077 and 25,856 person-years, respectively. The hazard ratio for developing SS was 3.31 (95% C.I.: 1.74–6.28) in patients with OCD, compared to those without OCD after adjusting for age, sex, and comorbidities. Furthermore, the risk of SS significantly increased over the 2-year follow-up period after OCD diagnosis. We concluded that risk of SS is significantly increased in patients with OCD compared to those without OCD. Clinically, Sjögren’s symptoms in OCD patients should be regularly assessed.

Keywords: obsessive-compulsive disorder; Sjögren’s syndrome; cohort study; NHIRD; database (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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