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Research Article 2024-05-15CC BYFree full text

The risks of autoimmune- and inflammatory post-acute COVID-19 conditions: a network cohort study in six European countries, the US, and Korea

Theresa Burkard, Kim López-Güell, Martí Català, Edward Burn, Antonella Delmestri, Sara Khalid +30 more

ObjectivesWe aimed to assess the risk of autoimmune- and inflammatory post-acute COVID-19 conditions. DesignDescriptive network cohort study. SettingElectronic health records from UK and Dutch primary care, Norwegian linked health registry, hospital records of specialist centres in Spain, France, and Korea, and healthcare claims from Estonia and the US. ParticipantsWe followed individuals between September 2020 an…

medRxiv medRxiv

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Research Article 2023-02-14CC BYFree full text

The long COVID evidence gap: comparing self-reporting and clinical coding of long COVID using longitudinal study data linked to healthcare records.

Anika Knuppel, Andy Boyd, John Macleod, Nishi Chaturvedi, Dylan M Williams

The term "long COVID" (LC) was coined in spring 2020 by individuals with ongoing symptoms following COVID-19, but it took until December 2020 for clinical codes to be created in order to record persistent post-COVID-19 illness and referrals within electronic health records (EHRs). Analysis of whole-population EHR databases have helped understand the epidemiology of LC; yet concerns exist about the completeness of…

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