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Is It Possible to Predict the Length of Stay of Patients Undergoing Hip-Replacement Surgery?

Author

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  • Teresa Angela Trunfio

    (Department of Advanced Biomedical Sciences, University of Naples “Federico II”, 80131 Naples, Italy)

  • Anna Borrelli

    (“San Giovanni di Dio e Ruggi d’Aragona” University Hospital, 84121 Salerno, Italy)

  • Giovanni Improta

    (Department of Public Health, University of Naples “Federico II”, 80131 Naples, Italy
    Interdepartmental Center for Research in Healthcare Management and Innovation in Healthcare (CIRMIS), University of Naples “Federico II”, 80131 Naples, Italy)

Abstract

The proximal fracture of the femur and hip is the most common reason for hospitalization in orthopedic departments. In Italy, 115,989 hip-replacement surgeries were performed in 2019, showing the economic relevance of studying this type of procedure. This study analyzed the data relating to patients who underwent hip-replacement surgery in the years 2010–2020 at the “San Giovanni di Dio e Ruggi d’Aragona” University Hospital of Salerno. The multiple linear regression (MLR) model and regression and classification algorithms were implemented in order to predict the total length of stay (LOS). Lastly, using a statistical analysis, the impact of COVID-19 was evaluated. The results obtained from the regression analysis showed that the best model was MLR, with an R 2 value of 0.616, compared with XGBoost, Gradient-Boosted Tree, and Random Forest, with R 2 values of 0.552, 0.543, and 0.448, respectively. The t -test showed that the variables that most influenced the LOS, with the exception of pre-operative LOS, were gender, age, anemia, fracture/dislocation, and urinary disorders. Among the classification algorithms, the best result was obtained with Random Forest, with a sensitivity of the longest LOS of over 89%. In terms of the overall accuracy, Random Forest and Gradient-Boosted Tree achieved a value of 71.76% and an error of 28.24%, followed by Decision Tree, with an accuracy of 71.13% and an error of 28.87%, and, finally, Support Vector Machine, with an accuracy of 65.06% and an error of 34.94%. A significant difference in cardiovascular disease, fracture/dislocation, and post-operative LOS variables was shown by the chi-squared test and Mann–Whitney test in the comparison between 2019 (before COVID-19) and 2020 (in full pandemic emergency conditions).

Suggested Citation

  • Teresa Angela Trunfio & Anna Borrelli & Giovanni Improta, 2022. "Is It Possible to Predict the Length of Stay of Patients Undergoing Hip-Replacement Surgery?," IJERPH, MDPI, vol. 19(10), pages 1-16, May.
  • Handle: RePEc:gam:jijerp:v:19:y:2022:i:10:p:6219-:d:819978
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    References listed on IDEAS

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    1. Arianna Scala & Alfonso Maria Ponsiglione & Ilaria Loperto & Antonio Della Vecchia & Anna Borrelli & Giuseppe Russo & Maria Triassi & Giovanni Improta, 2021. "Lean Six Sigma Approach for Reducing Length of Hospital Stay for Patients with Femur Fracture in a University Hospital," IJERPH, MDPI, vol. 18(6), pages 1-13, March.
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    Cited by:

    1. Arianna Scala & Ilaria Loperto & Maria Triassi & Giovanni Improta, 2022. "Risk Factors Analysis of Surgical Infection Using Artificial Intelligence: A Single Center Study," IJERPH, MDPI, vol. 19(16), pages 1-10, August.

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    Keywords

    data mining; length of stay; hip;
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