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Pubmed-Healthcare Costs of Irritable Bowel Syndrome (IBS) and IBS Subtypes in the United States

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Am J Gastroenterol. 2024 Mar 14. doi: 10.14309/ajg.0000000000002753. Online ahead of print.


BACKGROUND AIMS: Contemporaneous data on healthcare costs of irritable bowel syndrome (IBS) in the United States (U.S.) are lacking. We aimed to estimate all-cause and IBS-specific costs in patients with and without IBS and to compare costs across IBS subtypes.

METHODS: Using Optum's de-identified Clinformatics® Data Mart Database (CDM), we performed a retrospective cohort analysis of patients with and without IBS using data spanning 2016-2021. IBS patients were identified by ICD-10 codes. Controls were randomly selected from CDM participants. Primary outcomes were total all-cause and IBS-specific healthcare costs. Secondary outcomes were costs of individual services associated with any claim. Costs were compared between IBS and control groups and across IBS subtypes using propensity score weighting. Comorbidities were measured with the Elixhauser Comorbidity Index.

RESULTS: Comparison of 102,887 patients with IBS (77.9% female; mean ± standard deviation age 60.3±18.4 years; 75.8% white) and 102,887 controls demonstrated higher median (interquartile range [IQR]) total costs per year (p<0.001) for patients with IBS ($13,288 [5,307-37,071]) than controls ($5,999 [1,800-19,426]). IBS was associated with increased healthcare utilization and higher median annual costs per-patient for all services. Median (IQR) annual IBS-specific spending was $1127 (370-5,544) per patient. Propensity score-weighted analysis across IBS subtypes revealed differences in total all-cause and IBS-specific costs and in costs of individual services. Highest spending was observed in IBS-C (all-cause $16,005[6,384-43,972]; IBS-specific $2,222 [511-7887]).

CONCLUSIONS: Individuals with IBS exhibit higher healthcare utilization and incur substantially higher all-cause costs than those without. Care costs differ by IBS subtype.

PMID:38483304 | DOI:10.14309/ajg.0000000000002753

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