Interpretable machine learning model to predict the acute occurrence of delirium in elderly patients in the intensive care units: a retrospective cohort study

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Vydáno v:Journal of Big Data vol. 12, no. 1 (Feb 2025), p. 47
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Springer Nature B.V.
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LEADER 00000nab a2200000uu 4500
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022 |a 2196-1115 
024 7 |a 10.1186/s40537-025-01107-8  |2 doi 
035 |a 3169886680 
045 2 |b d20250201  |b d20250228 
245 1 |a Interpretable machine learning model to predict the acute occurrence of delirium in elderly patients in the intensive care units: a retrospective cohort study 
260 |b Springer Nature B.V.  |c Feb 2025 
513 |a Journal Article 
520 3 |a BackgroundDelirium is a severe complication in critical elderly patients. This study aimed to develop interpretable machine-learning (ML) models to predict acute delirium and identify risk factors for medical intervention in elderly patients in the intensive care unit (ICU).Patients and Methodselderly patients (age ≥ 65 and ≤ 89) were selected from electronic intensive care unit collaborative research database (eICU-CRD). Data of demographics and laboratory tests were collected on the first day of admission to ICU. Delirium in 7&#xa0;days after admission was identified. Difference between delirium and non-delirium groups was demonstrated. Association between delirium and mortality was proved through Kaplan–Meier survival curve. Participants were randomly distributed into a training set and a validation set without replacement at a ratio of 7:3. Recursive feature elimination (RFE) was used to determine the number of variables adopted in the model. The predictive capability of the ML models was demonstrated by receiver operating characteristic (ROC) analysis and calibration curve analysis. The interpretability of the model was demonstrated with SHapley Additive ExPlanations (SHAP).Resultsa total of 66263 elderly patients were selected, and in which 6299 patients (9.5%) were identified as acute delirium (within 7d after admission). Hospital mortality in delirium group was higher than that in non-delirium group (16.32% vs. 10.63%, p = 0.000). The cumulative survival probability of non-delirium patients were significantly higher than that of delirium patients (p < 0.001). When 20 variables were adopted, RandomForest and Xgboost models showed the highest predictive capability with the area under curve (AUC) = 0.91. Calibration curve analysis also proved this result. Glascow Coma Scale (GCS), acute physical and chronic health evaluation IV (APACHE IV), and sepsis had the highest importance in ML models. Mechanical ventilation and temperature were also important risk factors of acute delirium.ConclusionAcute delirium is an independent risk of mortality in elderly patients in the intensive care unit. APACHEIV, sepsis, mechanical ventilation and temperature were important risk factors of acute delirium, which were potential targets for medication. 
653 |a Older people 
653 |a Calibration 
653 |a Ventilation 
653 |a Ventilators 
653 |a Delirium 
653 |a Demographics 
653 |a Machine learning 
653 |a Intensive care 
653 |a Mortality 
653 |a Sepsis 
653 |a Survival 
653 |a Risk factors 
653 |a Big Data 
653 |a Demography 
653 |a Databases 
653 |a Mechanical ventilation 
653 |a Recursion 
653 |a Patients 
653 |a Prediction models 
653 |a Ability 
653 |a Health status 
653 |a Cohort analysis 
653 |a Elimination 
653 |a Variables 
653 |a Drugs 
653 |a Coma 
653 |a Hospitalization 
653 |a Intensive treatment 
773 0 |t Journal of Big Data  |g vol. 12, no. 1 (Feb 2025), p. 47 
786 0 |d ProQuest  |t ABI/INFORM Global 
856 4 1 |3 Citation/Abstract  |u https://www.proquest.com/docview/3169886680/abstract/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch 
856 4 0 |3 Full Text - PDF  |u https://www.proquest.com/docview/3169886680/fulltextPDF/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch