Health Care Analytics With Time-Invariant and Time-Variant Feature Importance to Predict Hospital-Acquired Acute Kidney Injury: Observational Longitudinal Study

Horng-Ruey Chua   ^{1, 2} , MMED ;   Kaiping Zheng   ³ , PhD ;   Anantharaman Vathsala   ^{1, 2} , MD ;   Kee-Yuan Ngiam   ^{4, 5} , MMED ;   Hui-Kim Yap   ^{6, 7} , PhD ;   Liangjian Lu   ^{6, 7} , MBBCHIR ;   Ho-Yee Tiong   ^{5, 8} , MMED ;   Amartya Mukhopadhyay   ^{2, 9} , MD ;   Graeme MacLaren   ^{5, 10} , MSc ;   Shir-Lynn Lim   ^{2, 11} , MMED ;   K Akalya   ¹ , BSc ;   Beng-Chin Ooi   ³ , PhD

¹ Division of Nephrology, Department of Medicine, National University Hospital, Singapore, Singapore

² Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore

³ Department of Computer Science, School of Computing, National University of Singapore, Singapore, Singapore

⁴ Division of Endocrine Surgery, Department of Surgery, National University Hospital, Singapore, Singapore

⁵ Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore

⁶ Division of Paediatric Nephrology, Department of Paediatrics, National University Children’s Medical Institute, Singapore, Singapore

⁷ Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore

⁸ Department of Urology, National University Hospital, Singapore, Singapore

⁹ Division of Respiratory and Critical Care Medicine, Department of Medicine, National University Hospital, Singapore, Singapore

¹⁰ Cardiothoracic Intensive Care Unit, Department of Cardiac, Thoracic and Vascular Surgery, National University Hospital, Singapore, Singapore

¹¹ Department of Cardiology, National University Heart Centre, Singapore, Singapore