BMC Med Inform Decis Mak - Technical challenges of providing record linkage services for research.

Tópicos

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Resumo

CKGROUND: Record linkage techniques are widely used to enable health researchers to gain event based longitudinal information for entire populations. The task of record linkage is increasingly being undertaken by specialised linkage units (SLUs). In addition to the complexity of undertaking probabilistic record linkage, these units face additional technical challenges in providing record linkage 'as a service' for research. The extent of this functionality, and approaches to solving these issues, has had little focus in the record linkage literature. Few, if any, of the record linkage packages or systems currently used by SLUs include the full range of functions required.METHODS: This paper identifies and discusses some of the functions that are required or undertaken by SLUs in the provision of record linkage services. These include managing routine, on-going linkage; storing and handling changing data; handling different linkage scenarios; accommodating ever increasing datasets. Automated linkage processes are one way of ensuring consistency of results and scalability of service.RESULTS: Alternative solutions to some of these challenges are presented. By maintaining a full history of links, and storing pairwise information, many of the challenges around handling 'open' records, and providing automated managed extractions are solved. A number of these solutions were implemented as part of the development of the National Linkage System (NLS) by the Centre for Data Linkage (part of the Population Health Research Network) in Australia.CONCLUSIONS: The demand for, and complexity of, linkage services is growing. This presents as a challenge to SLUs as they seek to service the varying needs of dozens of research projects annually. Linkage units need to be both flexible and scalable to meet this demand. It is hoped the solutions presented here can help mitigate these difficulties.

Resumo Limpo

ckground record linkag techniqu wide use enabl health research gain event base longitudin inform entir popul task record linkag increas undertaken specialis linkag unit slus addit complex undertak probabilist record linkag unit face addit technic challeng provid record linkag servic research extent function approach solv issu littl focus record linkag literatur record linkag packag system current use slus includ full rang function requiredmethod paper identifi discuss function requir undertaken slus provis record linkag servic includ manag routin ongo linkag store handl chang data handl differ linkag scenario accommod ever increas dataset autom linkag process one way ensur consist result scalabl serviceresult altern solut challeng present maintain full histori link store pairwis inform mani challeng around handl open record provid autom manag extract solv number solut implement part develop nation linkag system nls centr data linkag part popul health research network australiaconclus demand complex linkag servic grow present challeng slus seek servic vari need dozen research project annual linkag unit need flexibl scalabl meet demand hope solut present can help mitig difficulti

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