Pragmatic MDR: a metadata repository with bottom-up standardization of medical metadata through reuse

BMC Medical Informatics and Decision Making

Benedikt Stöcker¹  Sonja Baier¹  Jörg Henke²  Carsten Oliver Schmidt²  Julian Varghese³  Martin Dugas³  Philipp Neuhaus³  Michael Storck³  Sarah Riepenhausen³  Alexandra Meidt³  Stefan Hegselmann³  Cornelia Mertens³  Sophia Gessner³  Philipp Bruland⁴ 

[1] Centre for Clinical Trials, University of Münster, Münster, Germany;Institute of Community Medicine, University Medicine of Greifswald, Greifswald, Germany;Institute of Medical Informatics, University of Münster, Münster, Germany;University of Applied Sciences Ostwestfalen-Lippe, Lemgo, Germany;

关键词: Metadata repository;    Metadata standardization;    Data integration;    ISO/IEC 11179;   

DOI  :  10.1186/s12911-021-01524-8

来源: Springer

【 摘 要 】

BackgroundThe variety of medical documentation often leads to incompatible data elements that impede data integration between institutions. A common approach to standardize and distribute metadata definitions are ISO/IEC 11179 norm-compliant metadata repositories with top-down standardization. To the best of our knowledge, however, it is not yet common practice to reuse the content of publicly accessible metadata repositories for creation of case report forms or routine documentation. We suggest an alternative concept called pragmatic metadata repository, which enables a community-driven bottom-up approach for agreeing on data collection models. A pragmatic metadata repository collects real-world documentation and considers frequent metadata definitions as high quality with potential for reuse.MethodsWe implemented a pragmatic metadata repository proof of concept application and filled it with medical forms from the Portal of Medical Data Models. We applied this prototype in two use cases to demonstrate its capabilities for reusing metadata: first, integration into a study editor for the suggestion of data elements and, second, metadata synchronization between two institutions. Moreover, we evaluated the emergence of bottom-up standards in the prototype and two medical data managers assessed their quality for 24 medical concepts.ResultsThe resulting prototype contained 466,569 unique metadata definitions. Integration into the study editor led to a reuse of 1836 items and item groups. During the metadata synchronization, semantic codes of 4608 data elements were transferred. Our evaluation revealed that for less complex medical concepts weak bottom-up standards could be established. However, more diverse disease-related concepts showed no convergence of data elements due to an enormous heterogeneity of metadata. The survey showed fair agreement (Kalpha = 0.50, 95% CI 0.43–0.56) for good item quality of bottom-up standards.ConclusionsWe demonstrated the feasibility of the pragmatic metadata repository concept for medical documentation. Applications of the prototype in two use cases suggest that it facilitates the reuse of data elements. Our evaluation showed that bottom-up standardization based on a large collection of real-world metadata can yield useful results. The proposed concept shall not replace existing top-down approaches, rather it complements them by showing what is commonly used in the community to guide other researchers.

【 授权许可】

CC BY