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Continuous positive airway pressure (CPAP) is the first-line treatment for OSAS. However, CPAP termination rates remain very high, and adherence to therapy is a major issue. To date, studies targeting predictive factors of CPAP adherence by OSAS patients mainly include clinical data. The social, socioeconomic, psychological, and home environment aspects have been far less studied and largely underestimated. This study aims to obtain solid quantitative results examining the relationship between the determinants of refusal, non-adherence, or termination of CPAP treatment, and in particular the pivotal role played by health literacy.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods and analysis<\/jats:title><jats:p>This is a prospective, multicentre, observational study recruiting patients attending the sleep clinic of the Grenoble Alpes University Hospital, France. Consecutive adults (&gt;18 years) recently diagnosed with OSAS and prescribed CPAP treatment with telemonitoring will be enrolled in the present study. They will benefit from home visits by a CPAP technician or nurse at CPAP initiation. Patients will then be followed up for 6 months through the telemonitoring platform of a home-care provider. The primary objective is to evaluate the impact of health literacy (health literacy, measured by the European Health Literacy Survey questionnaire (HLS-EU-16) on the refusal, non-adherence or termination of CPAP treatment in newly diagnosed OSAS patients, during the first 6\u2009months after diagnosis. The target sample size is 250 participants.<\/jats:p><\/jats:sec><jats:sec><jats:title>Ethics and dissemination<\/jats:title><jats:p>The study protocol, patient information, and the non-opposition form were approved by the French national ethics committee (CPP 2021-92, January 2022). All patients are required to have signed a written informed consent form permitting their anonymised personal and medical data to be used for clinical research purposes. We will publish the results in a peer-reviewed medical journal and on our institutional websites.<\/jats:p><\/jats:sec><jats:sec><jats:title>Trial registration number<\/jats:title><jats:p><jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"clintrialgov\" xlink:href=\"NCT05385302\">NCT05385302<\/jats:ext-link>.<\/jats:p><\/jats:sec>","DOI":"10.1136\/bmjopen-2023-079765","type":"journal-article","created":{"date-parts":[[2024,6,2]],"date-time":"2024-06-02T10:27:14Z","timestamp":1717324034000},"page":"e079765","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":5,"title":["Sociological determinants of adherence to continuous positive airway pressure in the management of sleep apnoea syndrome: protocol for a transdisciplinary, prospective observational 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