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Artificial intelligence algorithms accurately predict prolonged length of stay following revision total knee arthroplasty
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Artificial intelligence algorithms accurately predict prolonged length of stay following revision total knee arthroplasty
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Artificial intelligence algorithms accurately predict prolonged length of stay following revision total knee arthroplasty
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Journal Article
Artificial intelligence algorithms accurately predict prolonged length of stay following revision total knee arthroplasty
2022
Overview
Purpose
Although the average length of hospital stay following revision total knee arthroplasty (TKA) has decreased over recent years due to improved perioperative and intraoperative techniques and planning, prolonged length of stay (LOS) continues to be a substantial driver of hospital costs. The purpose of this study was to develop and validate artificial intelligence algorithms for the prediction of prolonged length of stay for patients following revision TKA.
Methods
A total of 2512 consecutive patients who underwent revision TKA were evaluated. Those patients with a length of stay greater than 75th percentile for all length of stays were defined as patients with prolonged LOS. Three artificial intelligence algorithms were developed to predict prolonged LOS following revision TKA and these models were assessed by discrimination, calibration and decision curve analysis.
Results
The strongest predictors for prolonged length of stay following revision TKA were age (> 75 years;
p
< 0.001), Charlson Comorbidity Index (> 6;
p
< 0.001) and body mass index (> 35 kg/m
2
;
p
< 0.001). The three artificial intelligence algorithms all achieved excellent performance across discrimination (AUC > 0.84) and decision curve analysis (
p
< 0.01).
Conclusion
The study findings demonstrate excellent performance on discrimination, calibration and decision curve analysis for all three candidate algorithms. This highlights the potential of these artificial intelligence algorithms to assist in the preoperative identification of patients with an increased risk of prolonged LOS following revision TKA, which may aid in strategic discharge planning.
Level of evidence
IV.
