ArticleEuropean geriatric medicine2026
Standard-of-care vs. machine learning-recommended discharge destinations for geriatric surgical inpatients: algorithm development and internal validation.
Article in European geriatric medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeOlder adults undergoing surgery are at high risk for adverse outcomes due to age-related vulnerabilities. Comprehensive geriatric assessment (CGA) can improve discharge planning but is often limited by resource constraints. We evaluated whether machine learning (ML) can support individualized discharge destination recommendations for geriatric surgical inpatients.
methodsWe developed and internally validated an AdaBoost classifier using electronic health record and CGA data from 169 patients aged ≥ 70 years undergoing surgery at a single center. The model predicted discharge destinations (home, acute geriatric care unit, rehabilitation facility, nursing home) and was evaluated using accuracy, receiver operating characteristic (ROC) curves, and calibration within a fivefold cross-validation framework. Model performance was also compared with previously reported standard-of-care discharge decisions.
resultsThe study population consisted of 169 older adults, with mean age of 80.5 years (SD ± 6.3). The ML model achieved a micro-averaged ROC area under the curve of 0.94 [95% CI 0.92-0.96] and an accuracy of 82% [95% CI 0.76-0.86], representing a significant improvement over standard-of-care decisions (138 vs 124 correct, p = 0.041). Mimicking a human-in-the-loop strategy, we excluded the 15% of predictions with the highest uncertainty, which increased accuracy for the remaining predictions to 85% (p = 0.006). Model inspection identified Barthel Index, Clinical Frailty Scale, age, and number of medications as key predictors.
conclusionOur findings provide a proof-of-concept that an ML-based approach can effectively support individualized discharge planning for geriatric surgical patients. With 82% congruence with expert recommendations, the model significantly outperformed the standard of care. Its real-world clinical impact is currently being evaluated in an ongoing interventional trial.
trial registrationGerman clinical trials registry (DRKS00030684), registered on 21st November 2022.
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