Successful Linkage of Electronic Medical Records and National Health Data System in Type 2 Diabetes Research: Methodological Insights and Implications.
Romane Le Goff, Sandrine Brice, Andrea Contini, Marjorie Boussac, Arnaud Souche, Fabien Belloc, Nicolas Coulombel, Cédric Collin, Amandine Gouverneur, Mathieu Molimard
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Abstract
Purpose: This study assesses success and methodological implications of linking IQVIA's Electronic Medical Records (EMR) of type 2 diabetes (T2D) patients with the National Health Data System (SNDS) database, a cornerstone process in healthcare research.
Methods: The OREOT cohort was constituted by T2D patients identified in the IQVIA EMR from 2014 to 2018 and linked indirectly to SNDS database. The EMR database contains clinical records from general practitioner consultations, representing ~2.8% of the French population and the SNDS claims database covers over 99% of the French population's healthcare activities. Linkage success was evaluated by the linkage rate. Baseline patients' characteristics were described for both linked and non-linked patients.
Results: Of the 291 408 T2D patients identified in the EMR, 244 656 (84%) were successfully linked. After technical data cleaning, 239 141 (82%) were finally linked. Linked and non-linked patients (n = 52,267) were aged 65 years and more frequently male (57% and 59%); half were obese, and most of comorbidities were consistent. Linked patients had more EMR consultations (median 32 vs 16), and more cardiovascular events (12% vs 7%) or chronic kidney disease (10% vs 7%).
Conclusions: The successful linkage of EMR and SNDS databases provides valuable insights for future research in T2D and other chronic diseases requiring clinical data. This study demonstrates the feasibility of such data alignments, particularly in patients with complex health profiles or extensive medical records, and linkage potential to enhance real-world research quality. Despite higher prevalence of baseline comorbidities among linked patients, patients' characteristics were consistent with French T2D population.
期刊介绍：
The aim of Pharmacoepidemiology and Drug Safety is to provide an international forum for the communication and evaluation of data, methods and opinion in the discipline of pharmacoepidemiology. The Journal publishes peer-reviewed reports of original research, invited reviews and a variety of guest editorials and commentaries embracing scientific, medical, statistical, legal and economic aspects of pharmacoepidemiology and post-marketing surveillance of drug safety. Appropriate material in these categories may also be considered for publication as a Brief Report.
Particular areas of interest include:
design, analysis, results, and interpretation of studies looking at the benefit or safety of specific pharmaceuticals, biologics, or medical devices, including studies in pharmacovigilance, postmarketing surveillance, pharmacoeconomics, patient safety, molecular pharmacoepidemiology, or any other study within the broad field of pharmacoepidemiology;
comparative effectiveness research relating to pharmaceuticals, biologics, and medical devices. Comparative effectiveness research is the generation and synthesis of evidence that compares the benefits and harms of alternative methods to prevent, diagnose, treat, and monitor a clinical condition, as these methods are truly used in the real world;
methodologic contributions of relevance to pharmacoepidemiology, whether original contributions, reviews of existing methods, or tutorials for how to apply the methods of pharmacoepidemiology;
assessments of harm versus benefit in drug therapy;
patterns of drug utilization;
relationships between pharmacoepidemiology and the formulation and interpretation of regulatory guidelines;
evaluations of risk management plans and programmes relating to pharmaceuticals, biologics and medical devices.
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