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Accepted for/Published in: Journal of Medical Internet Research

Date Submitted: Aug 6, 2025
Date Accepted: Jan 16, 2026

The final, peer-reviewed published version of this preprint can be found here:

From Knowledge Graphs to Digital Twins: Perspectives on Modeling Patient Outcomes for Health Care Quality Assessment

Nitschke AK, Diaz Ochoa JG, Neumaier S, Knott M

From Knowledge Graphs to Digital Twins: Perspectives on Modeling Patient Outcomes for Health Care Quality Assessment

J Med Internet Res 2026;28:e81946

DOI: 10.2196/81946

PMID: 41915722

Warning: This is an author submission that is not peer-reviewed or edited. Preprints - unless they show as "accepted" - should not be relied on to guide clinical practice or health-related behavior and should not be reported in news media as established information.

From Knowledge Graphs to Digital Twins: Perspectives on Modeling Patient Outcomes for Healthcare Quality Assessment

  • Anna K. Nitschke; 
  • Juan G. Diaz Ochoa; 
  • Simone Neumaier; 
  • Markus Knott

ABSTRACT

Medical applications of mathematical modeling, including Machine Learning (ML) models, Knowledge Graphs (KG), and Digital Twins (DT) - primarily involve the prediction of individual patient outcomes. However, to date, the systematic evaluation of these models' contributions to healthcare quality has been explored only to a limited extent. This perspective article systematically examines how mathematical modeling can be integrated into health care quality management. It begins with a comprehensive overview of quality assessment in health care, addressing the definitions of procedures, patient outcomes and Quality Metrics with a quantitative focus. The emphasis is subsequently placed on three categories of Patient-Centered Quality of Care (PCQC), namely, patient safety, procedure accuracy and procedure efficacy, which provide both conceptual and mathematical descriptions. Different levels of modeling tasks essential for managing PCQC are identified. This quantitative concept provides the foundation for the subsequent implementation of ML models. This article facilitates a deeper understanding of the topic by assigning relevant publications to these three quality categories. Focus is placed on the applicability of KGs and DTs to improve quality management in healthcare.


 Citation

Please cite as:

Nitschke AK, Diaz Ochoa JG, Neumaier S, Knott M

From Knowledge Graphs to Digital Twins: Perspectives on Modeling Patient Outcomes for Health Care Quality Assessment

J Med Internet Res 2026;28:e81946

DOI: 10.2196/81946

PMID: 41915722

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