Development and Validation of a Decision Tree Analysis Model for Predicting Home Discharge in a Convalescent Ward: A Single Institution Study

  • NAKAIZUMI Dai
    Department of Rehabilitation, Japanese Red Cross Kanazawa Hospital, Japan Department of Physical Therapy, Graduate Course of Rehabilitation Science, School of Health Sciences, College of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Japan
  • MIYATA Shingo
    Department of Rehabilitation, Japanese Red Cross Kanazawa Hospital, Japan
  • UCHIYAMA Keita
    Department of Rehabilitation, Japanese Red Cross Kanazawa Hospital, Japan
  • TAKAHASHI Ikki
    Department of Rehabilitation, Suzuki Clinic Orthopaedics River City, Japan

抄録

<p>Objectives: Accurately predicting the likelihood of inpatients’ home discharge in a convalescent ward is crucial for assisting patients and families in decision-making. While logistic regression analysis has been commonly used, its complexity limits practicality in clinical settings. We focused on decision tree analysis, which is visually straightforward. This study aimed to develop and validate the accuracy of a prediction model for home discharge for inpatients in a convalescent ward using a decision tree analysis. Methods: The cohort consisted of 651 patients admitted to our convalescent ward from 2018 to 2020. We collected data from medical records, including disease classification, sex, age, duration of acute hospitalization, discharge destination (home or nonhome), and Functional Independence Measure (FIM) subitems at admission. We divided the cohort data into training and validation sets and developed a prediction model using decision tree analysis with discharge destination as the target and other variables as predictors. The model’s accuracy was validated using the validation data set. Results: The decision tree model identified FIM grooming as the first single discriminator of home discharge, diverging at four points and identifying subsequent branching for the duration of acute hospitalization. The model’s accuracy was 86.7%, with a sensitivity of 0.96, specificity of 0.52, positive predictive accuracy of 0.88, and negative predictive accuracy of 0.80. The area under the receiver operating characteristic curve was 0.75. Conclusion: The predictive model demonstrated more than moderate predictive accuracy, suggesting its utility in clinical practice. Grooming emerged as a variable with the highest explanatory power for determining home discharge.</p>

収録刊行物

  • Physical Therapy Research

    Physical Therapy Research 27 (1), 14-20, 2024-04-20

    一般社団法人日本理学療法学会連合

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