Student and Faculty Publications

Publication Date

9-22-2023

Journal

Biomedicines

Abstract

Background and Aim: Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder associated with other somatic disorders. We studied the prevalence and predictors of fibromyalgia and chronic fatigue syndrome (CFS) in IBS patients. Methods: We used the National Inpatient Sample and included hospitalization of individuals with IBS, using ICD-10 codes, from 2016–2019. The prevalence and predictors of fibromyalgia and CFS in IBS patients were studied. Univariate and multivariate patient- and hospital-level regression models were used to calculate the adjusted odds of fibromyalgia and CFS in the IBS patient population. Results: Of 1,256,325 patients with an ICD-10 code of IBS included in the study, 10.73% (134,890) also had ICD-10 codes for fibromyalgia and 0.42% (5220) for CFS. The prevalence of fibromyalgia and CFS was significantly higher in IBS patients (adjusted odds ratio (AOR) 5.33, 95% confidence interval (CI) 5.24–5.41, p < 0.001, and AOR 5.40, 95% CI 5.04–5.78, p < 0.001, respectively) compared to the general adult population without IBS. IBS-diarrhea, IBS-constipation, and IBS-mixed types were independently associated with increased odds of fibromyalgia and CFS. Increasing age (AOR 1.02, 95% CI 1.01–1.04, p 0.003; AOR 1.02, 95% CI 1.01–1.03, p 0.001), female gender (AOR 11.2, 95% CI 11.1–11.4, p < 0.001; AOR 1.86, 95% CI 1.78–1.93, p < 0.001) and white race (AOR 2.04, 95% CI 1.95–2.12, p < 0.001; AOR 1.69, 95% CI 1.34–2.13, p < 0.001) were independent predictors of increased odds of fibromyalgia and CFS, respectively. Conclusions: It appears that IBS is associated with an increased prevalence of somatic disorders such as fibromyalgia and CFS.

Keywords

fibromyalgia, chronic fatigue syndrome, IBS, irritable bowel syndrome

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