ArticleClinical rheumatology2018
Women who had appendectomy have increased risk of systemic lupus erythematosus: a nationwide cohort study.
Article in Clinical rheumatology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 13 citations in OpenAlex.
- Exploring the Immunological Role of the Microbial Composition of the Appendix and the Associated Risks of Appendectomies.Journal of personalized medicine · 2025Review
- Colonoscopy in the diagnosis and management of appendiceal disease.World journal of gastrointestinal endoscopy · 2024Article
- Article
- Appendicitis is associated with an increased risk of systemic lupus erythematosus: a nationwide, population-based, case-control study.Clinical rheumatology · 2023Article
- Risk of irritable bowel syndrome in patients who underwent appendectomy: A nationwide population-based cohort study.EClinicalMedicine · 2020Article
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
Abstract
The appendix is involved in immune function, and an appendectomy may alter the immune system. Studies evaluating the relationship between previous appendectomy and the risk of systemic lupus erythematosus (SLE) are lacking. This nationwide cohort study investigated the incidence and risk of SLE in patients who underwent appendectomy. Patients aged > 20 years who received appendectomy from 2000 to 2011 were identified from the National Health Insurance Research Database and assigned to the appendectomy cohort. Patients without appendectomy were randomly selected from the NHIRD and assigned to the control cohort; they were frequency matched to each study patient at a 4:1 ratio by sex, age, and index year. All patients were followed until SLE diagnosis, withdrawal from the National Health Insurance program, or the end of 2011. We used Cox models to estimate the hazard ratio (HR) and 95% confidence interval (CI) to compare the risk of SLE between the appendectomy and control cohorts. From 23.74 million people in the cohort, 80,582 patients undergoing appendectomy and 323,850 patients without appendectomy were followed for 723,438 and 2,931,737 person-years, respectively. The appendectomy cohort had a 2.04-fold higher risk of SLE than the control cohort (adjusted HR = 2.04, 95% CI = 1.52-2.76). Women aged ≤ 49 years who underwent appendectomy had a 2.27-fold higher risk of SLE than the corresponding controls (adjusted HR = 2.27, 95% CI = 1.62-3.19). Women aged ≤ 49 years who underwent appendectomy have a significantly higher risk of SLE.
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Registered trials
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