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April 29, 2025 – Berlin
Today marks a significant milestone in Germany’s healthcare digitalization: the nationwide rollout of the elektronische Patientenakte (ePA), or electronic patient record. Developed since 2003 as part of the Federal Ministry of Health’s digital strategy, the ePA aims to centralize all patient health data in a single, secure digital location. While the primary goal is to improve patient care, the ePA also promises to open new avenues for medical research by granting scientists access to anonymized health data-provided patients do not opt out.
How Will Researchers Use the ePA?
The ePA will store a wide range of medical information, including doctor’s notes, X-rays, and prescribed medications. For the first time, research institutions can apply to access this data through the Health Research Data Center. Previously, researchers could only use billing data from health insurers. Now, with patient consent, more detailed clinical data will be available for studies.
Professor Max Geraedts from the Philipps University of Marburg emphasizes the voluntary nature of data sharing: “Patients can refuse access to their ePA for research purposes at any time.” This opt-out model is seen as a crucial safeguard for privacy.
Medical data scientist Patrick Rockenschaub from the University of Innsbruck highlights two main benefits for science: “We can analyze how the healthcare system functions and whether it reaches the right people. We can also generate knowledge about long-term effects of diseases and risk factors.”
Challenges: Data Quality and Coverage
Despite the enthusiasm, experts caution that the ePA’s research potential has limits. Jürgen Windeler, former head of the Institute for Quality and Efficiency in Health Care, warns of “systematic bias.” Since patients can opt out and private insurance companies are not participating, the data may not represent the entire population. “Results may not be applicable to a large segment of society,” Windeler explains.
Another major hurdle is the format of the data. Much of it is stored as PDFs, images, or videos-formats that are difficult to analyze systematically. “These are essentially dumped into a data pile, making them almost useless for research,” Windeler laments. He also notes that such data can only reveal statistical correlations, not causal relationships.
Lessons from the UK and the Road Ahead
The UK has already allowed researchers to use electronic health records, with notable successes during the COVID-19 pandemic. For example, researchers identified a life-saving medication for hospitalized COVID-19 patients using national data. Iris Pigeot, director of the Leibniz Institute for Prevention Research and Epidemiology in Bremen, believes that if Germany had had the ePA during the pandemic, it could have independently assessed vaccine effectiveness.
However, the UK also struggles with data quality-Rockenschaub refers to working with these datasets as a “PDF hell.” He hopes that advances in artificial intelligence will eventually make it easier to extract useful information from unstructured data. Still, experts agree that it will take years before the ePA’s full research potential is realized.
Windeler advises researchers not to rely solely on ePA data but to continue conducting clinical studies that provide robust scientific evidence.
Disclaimer:
This article is based on information from Tagesschau (https://www.tagesschau.de/wissen/gesundheit/e-patientenakte-forschung-100.html) as of April 29, 2025. The situation regarding the electronic patient record and its use in research may evolve. For official information and updates, consult the German Federal Ministry of Health or your healthcare provider.
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