Derivation and validation of pragmatic clinical models to predict hospital length of stay after cardiac surgery in Ontario, Canada: a population-based cohort study

Department of Anesthesiology, Perioperative and Pain Medicine (Sun), Stanford University School of Medicine, Stanford, CA; Team Soleil Data Laboratory (Fottinger, Sun), University of Ottawa Heart Institute, Ottawa, Ont.; ICES uOttawa (Bader Eddeen, Sun), Ottawa, Ont.; ICES Central (Lee); Peter Munk Cardiac Centre (Lee), University Health Network, University of Toronto, Toronto, Ont.; CorHealth Ontario (Woodward), Toronto, Ont.

Department of Anesthesiology, Perioperative and Pain Medicine (Sun), Stanford University School of Medicine, Stanford, CA; Team Soleil Data Laboratory (Fottinger, Sun), University of Ottawa Heart Institute, Ottawa, Ont.; ICES uOttawa (Bader Eddeen, Sun), Ottawa, Ont.; ICES Central (Lee); Peter Munk Cardiac Centre (Lee), University Health Network, University of Toronto, Toronto, Ont.; CorHealth Ontario (Woodward), Toronto, Ont.

Department of Anesthesiology, Perioperative and Pain Medicine (Sun), Stanford University School of Medicine, Stanford, CA; Team Soleil Data Laboratory (Fottinger, Sun), University of Ottawa Heart Institute, Ottawa, Ont.; ICES uOttawa (Bader Eddeen, Sun), Ottawa, Ont.; ICES Central (Lee); Peter Munk Cardiac Centre (Lee), University Health Network, University of Toronto, Toronto, Ont.; CorHealth Ontario (Woodward), Toronto, Ont.

Department of Anesthesiology, Perioperative and Pain Medicine (Sun), Stanford University School of Medicine, Stanford, CA; Team Soleil Data Laboratory (Fottinger, Sun), University of Ottawa Heart Institute, Ottawa, Ont.; ICES uOttawa (Bader Eddeen, Sun), Ottawa, Ont.; ICES Central (Lee); Peter Munk Cardiac Centre (Lee), University Health Network, University of Toronto, Toronto, Ont.; CorHealth Ontario (Woodward), Toronto, Ont.

Department of Anesthesiology, Perioperative and Pain Medicine (Sun), Stanford University School of Medicine, Stanford, CA; Team Soleil Data Laboratory (Fottinger, Sun), University of Ottawa Heart Institute, Ottawa, Ont.; ICES uOttawa (Bader Eddeen, Sun), Ottawa, Ont.; ICES Central (Lee); Peter Munk Cardiac Centre (Lee), University Health Network, University of Toronto, Toronto, Ont.; CorHealth Ontario (Woodward), Toronto, Ont.