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Hospitalisations for COVID-19 - a comparison of different data sources
Summary
Comparing COVID-19 hospitalisation data in Norway revealed that the Norwegian Patient Registry-Norwegian Surveillance System for Communicable Diseases (NPR-MSIS) had higher new admissions than the Norwegian Intensive Care and Pandemic Registry (NIPaR). Trends were similar across sources.
Area of Science:
- Public Health
- Epidemiological Surveillance
- Health Informatics
Background:
- Norway utilizes three primary data sources for monitoring COVID-19 hospitalizations: Directorate of Health, Norwegian Intensive Care and Pandemic Registry (NIPaR), and Norwegian Patient Registry (NPR) linked with Norwegian Surveillance System for Communicable Diseases (MSIS).
- Understanding discrepancies between these data sources is crucial for optimizing current and future public health surveillance strategies.
Purpose of the Study:
- To compare the performance and results of three distinct data sources used for tracking COVID-19 hospitalizations in Norway.
- To identify and analyze discrepancies in reported COVID-19 hospitalization data between March and June 2020.
Main Methods:
- A descriptive analysis was conducted on data from the Directorate of Health, NIPaR, and NPR-MSIS.
- Key metrics analyzed included daily new admissions, total hospitalizations, and patients on ventilatory support, stratified by regional health authority.
Main Results:
- The NPR-MSIS data reported a higher cumulative number of new admissions (n=1260) compared to NIPaR (n=1153), with significant discrepancies noted early in the study period.
- While the overall trend of hospitalizations was consistent across all three sources, NPR-MSIS tended to overestimate the number of patients requiring ventilatory support.
- The Directorate of Health's basic daily data provided comparable results to the more comprehensive, retrospectively adjusted data from NIPaR and NPR-MSIS.
Conclusions:
- Discrepancies in new admissions between NIPaR and NPR-MSIS were largely attributed to delayed patient registrations before NIPaR became fully operational.
- The Directorate of Health's daily data offers a reliable overview, comparable to more detailed registries.
- Further investigation is warranted to assess the timeliness and suitability of NIPaR and NPR-MSIS data for emergency preparedness scenarios.
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