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Can the validity of a cohort be improved by reweighting based on register data? Evidence from the Swedish MDC study

Published Online: 2020-12-17

Published Print: 2020-12

Authors

Nilsson, Anton http://orcid.org/0000-0001-5774-7189
Bonander, Carl

Strömberg, Ulf

Björk, Jonas
Funding

Funding for this research was provided by:

Forskningsrådet om Hälsa, Arbetsliv och Välfärd (2017-00414)
License Information

Text and Data Mining valid from 2020-12-01

Version of Record valid from 2020-12-17
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Article History

Received: 14 May 2020

Accepted: 3 December 2020

First Online: 17 December 2020

Ethics approval and consent to participate

: The project has been approved by the Regional Ethics Review Board in Lund (Dnr: 2017/846). Two data sources were used: 1. Data from the MDC cohort and 2. National register data. Written informed consent has been obtained from all participants in the MDC cohort. Consent was however not obtained from individuals only appearing in the national register data. As stated by the Swedish law of Research Ethics, national register data can be used for research purposes without informed consent, given that approval has been obtained from an ethics board. The Regional Ethics Review Board in Lund granted us approval to use national register data without informing individuals appearing in the data and without their consent under the condition that information about the project was published at ExternalRef removed and that individuals were given the opportunity to be removed from the study by contacting co-author J.B. The request by the ethics board was obeyed.

: Not applicable.

: Not applicable.

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