Department of Infection Control and Vaccines, Norwegian Institute of Public Health, Oslo, Norway.
Department of Infection Control and Preparedness, Norwegian Institute of Public Health, Oslo, Norway.
Euro Surveill. 2023 Aug;28(33). doi: 10.2807/1560-7917.ES.2023.28.33.2200888.
BackgroundThe surveillance of persons hospitalised with COVID-19 has been essential to ensure timely and appropriate public health response. Ideally, surveillance systems should distinguish persons hospitalised with COVID-19 from those hospitalised due to COVID-19.AimWe compared data in two national electronic health registries in Norway to critically appraise and inform the further development of the surveillance of persons hospitalised with COVID-19.MethodWe included hospitalised COVID-19 patients registered in the Norwegian Patient Registry (NPR) or the Norwegian Pandemic Registry (NoPaR) with admission dates between 17 February 2020 and 1 May 2022. We linked patients, identified overlapping hospitalisation periods and described the overlap between the registries. We described the prevalence of International Classification of Diseases (ICD-10) diagnosis codes and their combinations by main cause of admission (clinically assessed as COVID-19 or other), age and time.ResultsIn the study period, 19,486 admissions with laboratory-confirmed COVID-19 were registered in NoPaR and 21,035 with the corresponding ICD-10 code U07.1 in NPR. Up to late 2021, there was a 90-100% overlap between the registries, which thereafter decreased to < 75%. The prevalence of ICD-10 codes varied by reported main cause, age and time.ConclusionChanges in patient cohorts, virus characteristics and the management of COVID-19 patients from late 2021 impacted the registration of patients and coding practices in the registries. Using ICD-10 codes for the surveillance of persons hospitalised due to COVID-19 requires age- and time-specific definitions and ongoing validation to consider temporal changes in patient cohorts and virus characteristics.
背景
对 COVID-19 住院患者的监测对于确保及时和适当的公共卫生反应至关重要。理想情况下，监测系统应区分因 COVID-19 住院的患者和因 COVID-19 而住院的患者。
目的
我们比较了挪威两个国家电子健康注册中心的数据，以批判性地评估和为 COVID-19 住院患者监测的进一步发展提供信息。
方法
我们纳入了 2020 年 2 月 17 日至 2022 年 5 月 1 日期间在挪威患者登记处（NPR）或挪威大流行登记处（NoPaR）登记的 COVID-19 住院患者。我们对患者进行了链接，确定了重叠的住院期，并描述了两个登记处之间的重叠。我们描述了按主要入院原因（临床评估为 COVID-19 或其他）、年龄和时间划分的国际疾病分类（ICD-10）诊断代码及其组合的患病率。
结果
在研究期间，NoPaR 登记了 19486 例经实验室确诊的 COVID-19 住院患者，NPR 登记了 21035 例对应的 ICD-10 代码 U07.1。直到 2021 年底，两个登记处之间的重叠率为 90-100%，此后降至<75%。ICD-10 代码的患病率因报告的主要原因、年龄和时间而异。
结论
2021 年底以来，患者队列、病毒特征和 COVID-19 患者的管理变化影响了登记处的患者登记和编码做法。使用 ICD-10 代码对因 COVID-19 住院的患者进行监测需要针对年龄和时间的特定定义和持续验证，以考虑患者队列和病毒特征的时间变化。
