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      <item>University College London, London, United Kingdom</item>
      <item>Royal Papworth Hospital Trust, Cambridge, United Kingdom</item>
      <item>Queen Mary University of London, London, United Kingdom</item>
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The epidemiology studies were conducted using CPRD Aurum (March 2023 release) and CPRD GOLD (March 2023) release and and ICD-10 coded linked HES data. 

Further information is provided in the codelist checklist for each concept.</note>
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      <item>London School of Hygiene &amp; Tropical Medicine, London, United Kingdom</item>
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    <research_centre>
      <item>XEHR</item>
    </research_centre>
    <collection_mode>
      <item>Observation</item>
    </collection_mode>
    <full_text_status>public</full_text_status>
    <place_of_pub>London, United Kingdom</place_of_pub>
    <funders>
      <item>National Institute for Health Research (NIHR)</item>
    </funders>
    <projects>
      <item>sleep-epidemiology (NIHR Academy)</item>
    </projects>
    <resourcetype>
      <resourcetypegeneral>Dataset</resourcetypegeneral>
      <resourcetype>Quantitative</resourcetype>
    </resourcetype>
    <grant>NIHR301730</grant>
    <language>
      <item>en</item>
    </language>
    <collection_date>
      <date_from>2021-10-01</date_from>
      <date_to>2025-09-30</date_to>
    </collection_date>
    <related_resources>
      <item>
        <title>Study protocol</title>
        <url>https://doi.org/10.17605/OSF.IO/F5UKW</url>
        <type>other</type>
      </item>
      <item>
        <title>Funding page</title>
        <url>https://fundingawards.nihr.ac.uk/award/NIHR301730</url>
        <type>other</type>
      </item>
      <item>
        <title>Protocol approval</title>
        <url>https://www.cprd.com/approved-studies/chronology-healthcare-resource-use-and-comorbidities-people-obstructive-sleep</url>
        <type>other</type>
      </item>
      <item>
        <title>Github repository (validation paper)</title>
        <url>https://github.com/hstrongman/OSA-narc_CPRD_validation</url>
        <type>data</type>
      </item>
      <item>
        <title>Github repository (epidemiology papers)</title>
        <url>https://github.com/hstrongman/OSA-narc-CPRD-chronology</url>
        <type>data</type>
      </item>
      <item>
        <title>Incidence and prevalence of obstructive sleep apnoea and narcolepsy in the UK: a population-based descriptive study (preprint)</title>
        <url>https://doi.org/10.1101/2025.06.18.25329848</url>
        <type>paper</type>
      </item>
    </related_resources>
    <repo_link>
      <item>
        <title>Validation of algorithms identifying diagnosed obstructive sleep apnoea and narcolepsy in coded primary care and linked hospital activity data in England</title>
        <link>https://researchonline.lshtm.ac.uk/id/eprint/4676894</link>
      </item>
    </repo_link>
    <funders_info>
      <item>
        <project>sleep-epidemiology (NIHR Academy)</project>
        <funder_name>National Institute for Health Research (NIHR)</funder_name>
        <grant>NIHR301730</grant>
        <funder_id>http://dx.doi.org/10.13039/501100000272</funder_id>
      </item>
    </funders_info>
    <ukri_date_sub>2025-07-14</ukri_date_sub>
  </eprint>
</eprints>
