Decaying relevance of clinical data towards future decisions in data-driven inpatient clinical order sets
Open accessAbstract
OBJECTIVE: Determine how varying longitudinal historical training data can impact prediction of future clinical decisions. Estimate the "decay rate" of clinical data source relevance. MATERIALS AND METHODS: We trained a clinical order recommender system, analogous to Netflix or Amazon's "Customers who bought A also bought B..." product recommenders, based on a tertiary academic hospital's structured electronic health record data. We used this system to predict future (2013) admission orders based on different subsets of historical training data (2009 through 2012), relative to existing human-authored order sets. RESULTS: ). Algorithmically learned models from even the older (2009) data was still more effective than existing human-authored order sets (ROC AUC 0.81, precision 16% recall 35%). Training with more longitudinal data (2009-2012) was no better than using only the most recent (2012) data, unless applying a decaying weighting scheme with a "half-life" of data relevance about 4 months. DISCUSSION: Clinical practice patterns (automatically) learned from electronic health record data can vary substantially across years. Gold standards for clinical decision support are elusive moving targets, reinforcing the need for automated methods that can adapt to evolving information. CONCLUSIONS AND RELEVANCM: Prioritizing small amounts of recent data is more effective than using larger amounts of older data towards future clinical predictions.
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Clinical practice patterns learned from EHR data can vary substantially across years.
“Clinical practice patterns learned from EHR data can vary substantially across years [6].”
From Validation is not enough: Longitudinal evidence of post-deployment fragility in clinical AI systems (2026) · cites this paper as [6]
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“Clinical practice patterns learned from EHR data can vary substantially across years [6].”
- Authors
- Chen, J. H., Alagappan, M., Goldstein, M. K., Asch, S. M., & Altman, R. B.
- Affiliations
- Stanford Medicine (US)
- Beth Israel Deaconess Medical Center (US)
- VA Palo Alto Health Care System (US)
- Corresponding author
- Chen, Jonathan H.
- Venue
- International Journal of Medical Informatics
- Publisher
- Elsevier BV
- Published
- 2017-06
- Volume
- 102
- Pages
- 71-79
- ISSN
- 1386-5056 (ISSN-L)
- PMC
- PMC5459355
- OpenAlex
- W2595962374
- Cited by
- 101
- References
- 1
- Citations by year
- 2026: 5 · 2025: 7 · 2024: 9 · 2023: 10 · 2022: 16 · 2021: 14 · 2020: 13 · 2019: 10 · 2018: 16 · 2017: 1
- FWCI
- 6.52
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- International Journal of Medical Informatics (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institute of General Medical Sciences (R01GM102365, R24GM061374)
- National Institute of Environmental Health Sciences (K01ES026837)
- U.S. National Library of Medicine (R01LM005652)
- National Center for Research Resources (UL1RR025744)
- Topics
- Physical Sciences › Computer Science › Artificial Intelligence › Machine Learning in Healthcare
- Health Sciences › Health Professions › Health Information Management › Electronic Health Records Systems
- Health Sciences › Medicine › Health Informatics › Artificial Intelligence in Healthcare and Education
- Keywords
- clinical decision support, recommender systems, longitudinal electronic health records, clinical practice patterns, clinical prediction
- MeSH terms
- Patient Care, Hospitalization, Humans, Inpatients, Practice Patterns, Physicians', Information Storage and Retrieval, Decision Support Systems, Clinical, Medical Order Entry Systems, Electronic Health Records
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