Sylvie Gadeyne | Vrije Universiteit Brussel (original) (raw)

Papers by Sylvie Gadeyne

BMJ Open, May 1, 2023

Introduction Data linkage systems have proven to be a powerful tool in support of combating and m... more Introduction Data linkage systems have proven to be a powerful tool in support of combating and managing the COVID-19 pandemic. However, the interoperability and the reuse of different data sources may pose a number of technical, administrative and data security challenges. Methods and analysis This protocol aims to provide a case study for linking highly sensitive individual-level information. We describe the data linkages between health surveillance records and administrative data sources necessary to investigate social health inequalities and the long-term health impact of COVID-19 in Belgium. Data at the national institute for public health, Statistics Belgium and InterMutualistic Agency are used to develop a representative case-cohort study of 1.2 million randomly selected Belgians and 4.5 million Belgians with a confirmed COVID-19 diagnosis (PCR or antigen test), of which 108 211 are COVID-19 hospitalised patients (PCR or antigen test). Yearly updates are scheduled over a period of 4 years. The data set covers inpandemic and postpandemic health information between July 2020 and January 2026, as well as sociodemographic characteristics, socioeconomic indicators, healthcare use and related costs. Two main research questions will be addressed. First, can we identify socioeconomic and sociodemographic risk factors in COVID-19 testing, infection, hospitalisations and mortality? Second, what is the medium-term and long-term health impact of COVID-19 infections and hospitalisations? More specific objectives are (2a) To compare healthcare expenditure during and after a COVID-19 infection or hospitalisation; (2b) To investigate long-term health complications or premature mortality after a COVID-19 infection or hospitalisation; and (2c) To validate the administrative COVID-19 reimbursement nomenclature. The analysis plan includes the calculation of absolute and relative risks using survival analysis methods. Ethics and dissemination This study involves human participants and was approved by Ghent University hospital ethics committee: reference B.U.N. 1432020000371 and the Belgian Information Security Committee: reference Beraadslaging nr. 22/014 van 11 January 2022, available via https://www.ehealth.fgov.be/ehealthplatform/file/ view/AX54CWc4Fbc33iE1rY5a?filename=22-014-n034-HELICON-project.pdf. Dissemination activities include peer-reviewed publications, a webinar series and a project website. The pseudonymised data are derived from administrative and health sources. Acquiring informed consent would require extra information on the subjects. The research team is prohibited from gaining additional knowledge on the study subjects by the Belgian Information Security Committee's interpretation of the Belgian privacy framework.

Introduction Lung cancer is a leading cause of cancer death and lung cancer mortality among Belgi... more Introduction Lung cancer is a leading cause of cancer death and lung cancer mortality among Belgian men is the highest in Europe. The association between lung cancer and socioeconomic status has been extensively studied, however, little research has focused on geographical differences in lung cancer mortality. Spatial analysis can provide insight into at risk regions and populations, which could aid health interventions, and can help to develop or prove hypothesis about key determinants …

ISEE Conference Abstracts

Environment International

Scandinavian Journal of Work, Environment & Health

Non-standard employment and mortality in Belgian workers: A census-based investigation by Balogh ... more Non-standard employment and mortality in Belgian workers: A census-based investigation by Balogh R, Gadeyne S, Vanroelen C This paper shows that types of (non-standard) employment measured in 2001 were associated with different and gender-dependent mortality risks and patterns over the subsequent 13 years in Belgium. Especially male temporary agency and seasonal workers at baseline exhibited elevated all-cause and cause-specific mortality compared to permanent employees. Policy should particularly protect these groups, more specifically from accidents and occupational exposure.

Monografie nr. 5B: Vruchtbaarheid, Brussel, Ministerie van Economische Zaken, Nationaal Instituut voor de Statistiek, Federale Diensten voor wetenschappelijke, technische en culturele aangelegenheden., 2000

Nederlandse Demografiedag 2014, Dec 10, 2014

Population, Space and Place, 2021

Previous studies have repeatedly shown that all‐cause mortality is subject to spatial variation w... more Previous studies have repeatedly shown that all‐cause mortality is subject to spatial variation within countries and that acculturation of migrant mortality to native patterns occurs gradually with increasing duration of residence. This suggests that spatial variation in mortality is likely to differ between migrants and natives and that the migrant mortality advantage may be subject to strong variation between local settings. Using longitudinal microdata from the Belgian census, the population register, and the tax registers for 2011–2015, this article contributes to our understanding of migrant‐native mortality differentials by considering subnational spatial variation in the mortality advantage, settlement patterns of migrant groups, and varying degrees of acculturation by duration of residence. Consistent with the health selection hypothesis and the migration as a rapid health transition hypothesis, spatial variation in all‐cause mortality is limited among migrants with duration...

Cancer Epidemiology, Biomarkers & Prevention, 2021