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Machine Learning Models for Predicting Mortality in Pneumonia Patients
Vedrana Pavlovic1, Md Sahil Haque1, Nikola Grubor1
1Institute for Medical Statistics and Informatics, Faculty of Medicine University of Belgrade.
Abstract:
Pneumonia remains a significant cause of hospital mortality, prompting the need for precise mortality prediction methods. This study conducted a systematic review identifying predictors of mortality using Machine Learning (ML) and applied these methods to hospitalized pneumonia patients at the University Clinical Centre Zvezdara. The systematic review identified 16 studies (313,572 patients), revealing common mortality predictors including age, oxygen levels, and albumin. A Random Forest (RF) model was developed using local data (n=343), achieving an accuracy of 99%, and AUC of 0.99. Key predictors identified were chest X-ray worsening, ventilator use, age, and oxygen support. ML demonstrated high potential for accurately predicting pneumonia mortality, surpassing traditional severity scores, and highlighting its practical clinical utility.
Insights
Machine learning (ML) accurately predicts pneumonia mortality by analyzing patient data. This approach identifies key factors like chest X-ray changes and ventilator use, offering better clinical insights than traditional scores.
Area of Science:
- Medical Informatics
- Clinical Medicine
- Artificial Intelligence in Healthcare
Background:
- Pneumonia is a leading cause of hospital mortality.
- Accurate mortality prediction is crucial for patient management.
- Existing prediction methods may lack precision.
Purpose of the Study:
- To systematically review Machine Learning (ML) predictors for pneumonia mortality.
- To develop and validate an ML model for predicting mortality in hospitalized pneumonia patients.
- To compare ML model performance against traditional severity scores.
Main Methods:
- Systematic literature review of 16 studies (313,572 patients) to identify ML-based mortality predictors.
- Development of a Random Forest (RF) model using clinical data from 343 hospitalized pneumonia patients.
- Validation of the RF model using accuracy and Area Under the Curve (AUC) metrics.
Main Results:
- Systematic review identified age, oxygen levels, and albumin as common predictors.
- The developed RF model achieved 99% accuracy and 0.99 AUC.
- Key predictors in the local cohort included worsening chest X-ray, ventilator use, age, and oxygen support.
Conclusions:
- Machine learning demonstrates high potential for accurate pneumonia mortality prediction.
- ML models show superior performance compared to traditional clinical scores.
- The findings highlight the practical clinical utility of ML in managing pneumonia patients.
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