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Federated causal inference based on real-world observational data sources: application to a SARS-CoV-2 vaccine effectiveness assessment.
Causality COVID-19 COVID-19 Vaccines Humans SARS-CoV-2 Vaccine Efficacy Abstract: INTRODUCTION: Causal inference helps researchers and policy-makers to evaluate public health interventions. When comparing ...
Clinical Severity of SARS-CoV-2 Omicron Variant Compared with Delta among Hospitalized COVID-19 Patients in Belgium during Autumn and Winter Season 2021-2022.
in-hospital mortality in hospitalized patients when infected with the Omicron variant compared to when infected with the Delta variant. The study is based on a causal framework using individually-linked data ...
Pre-vaccination SARS-CoV-2 seroprevalence among staff and residents of nursing homes in Flanders (Belgium) in fall 2020
Flanders, Belgium. Sociodemographic and medical data [including coronavirus disease 2019 (COVID-19) symptoms and results of RT- PCR tests] were retrieved using questionnaires. The overall seroprevalence was ...
Leveraging of SARS-CoV-2 PCR Cycle Thresholds Values to Forecast COVID-19 Trends.
SARS-CoV-2 RT- PCR Ct values produced from April 1, 2020, to May 15, 2021, were compared with national COVID-19 confirmed cases notifications according to their geographical and time distribution. These Ct ...
Real-World Comparative Effectiveness of SARS-CoV-2 Primary Vaccination Campaigns Against SARS-CoV-2 Infections: A Federated Observational Study Emulating a Target Trial in Three Nations
data sources to comply with the data requirements specified in the study in the sites Aragon (Spain), Brussels and Wallonia (Belgium), and Finland. In Aragon (Spain), the Research Ethics Committee of ...