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Participants without a preexisting diagnosis of OSA had an overnight sleep registration. OSA was defined as an apnea\u2013hypopnea index (AHI)\u2009\u2265\u20095 plus characteristic clinical symptoms, or AHI\u2009\u2265\u200915. We used the Berlin Questionnaire to assess clinical symptoms of OSA.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>OSA was found in 59% (29\/49) of the participants (95% confidence interval 44 to 73%), of whom 59% (17\/29) had moderate to severe OSA (AHI\u2009\u2265\u200915), and 48% (14\/29) were previously undiagnosed. Variables predictive of OSA were: excessive daytime sleepiness; unrested sleep; loud snoring; observed nocturnal breathing stops; hypertension; age\u2009&gt;\u200940\u00a0years; and BMI\u2009&gt;\u200930\u00a0kg\/m<jats:sup>2<\/jats:sup>.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>OSA was highly prevalent in Norwegian adults with achondroplasia, which we believe is representative of this population worldwide. Follow-up of adults with achondroplasia should include assessment of symptoms and signs of OSA, with a low threshold for conducting an overnight sleep registration if findings suggestive of OSA are present.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s13023-021-01792-7","type":"journal-article","created":{"date-parts":[[2021,4,7]],"date-time":"2021-04-07T13:06:05Z","timestamp":1617800765000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Obstructive sleep apnea in Norwegian adults with achondroplasia: a population-based study"],"prefix":"10.1186","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2804-5783","authenticated-orcid":false,"given":"Svein O.","family":"Fredwall","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Britt","family":"\u00d8verland","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hanne","family":"Berdal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S\u00f8ren","family":"Berg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Harald","family":"Weedon-Fekj\u00e6r","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ingeborg B.","family":"Lidal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ravi","family":"Savarirayan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Grethe","family":"M\u00e5num","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,4,7]]},"reference":[{"issue":"1","key":"1792_CR1","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1186\/s13023-018-0972-6","volume":"14","author":"RM Pauli","year":"2019","unstructured":"Pauli RM. 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