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In this study, we investigated the associations between insomnia and healthcare utilization and costs in patients with COPD. A retrospective cohort of veterans with COPD were identified from national Veterans Affairs administration data for fiscal years 2012\u20132017. Insomnia was operationalized as having an insomnia diagnosis based on International Classification of Disease codes or having a prescription of &gt;\u200930 doses of a sedative-hypnotic medication in a given fiscal year. The index date for insomnia was the first date when dual criteria for COPD and insomnia was met. The index date for those without insomnia was set as the COPD index date. Our primary outcomes were 1-year healthcare utilization and costs related to outpatient visits and hospitalizations after index date. COPD-related healthcare utilization variables included number of prescription fills of corticosteroids and\/or antibiotics and outpatient visits and hospitalizations with a primary diagnosis of COPD. Out of 1,011,646 patients (96% men, mean age 68.4 years) diagnosed with COPD, 407,363 (38.8%) had insomnia. After adjustment for confounders, insomnia was associated with higher rates of outpatient visits, hospitalizations, and fills for corticosteroids and\/or antibiotics, longer hospital length of stay, and $10,344 higher hospitalization costs in the 12 months after index date. These findings highlight the importance of insomnia as a potentially modifiable target for reducing the burden of COPD on patients and healthcare systems.<\/jats:p>","DOI":"10.1186\/s12931-023-02401-w","type":"journal-article","created":{"date-parts":[[2023,3,25]],"date-time":"2023-03-25T04:25:27Z","timestamp":1679718327000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Insomnia in chronic obstructive pulmonary disease and associations with healthcare utilization and costs"],"prefix":"10.1186","volume":"24","author":[{"given":"Faith S.","family":"Luyster","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Monique Y.","family":"Boudreaux-Kelly","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jessica M.","family":"Bon","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2023,3,25]]},"reference":[{"key":"2401_CR1","doi-asserted-by":"publisher","first-page":"14","DOI":"10.1111\/resp.12660","volume":"21","author":"JL L\u00f3pez-Campos","year":"2016","unstructured":"L\u00f3pez-Campos JL, Tan W, Soriano JB. 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