Johannesdottir, Katrin B, Henrik Kehlet, Pelle B Petersen, Eske K Aasvang, Helge B D Sørensen, Christoffer C Jørgensen, and On behalf of Centre for Fast-track Hip and Knee Replacement Collaborative Group. “Machine Learning Classifiers Do Not Improve Prediction of Hospitalization > 2 Days After Fast-Track Hip and Knee Arthroplasty Compared With a Classical Statistical Risk Model”. Acta Orthopaedica 92 (November 16, 2021). Accessed December 9, 2021. https://actaorthop.org/actao/article/view/843.