Figure 3.

Cluster‐bar plot of the difference in the highest reported c‐index for machine learning and conventional statistical approaches for readmission studies. Bars of the same colour indicate different time points in the same study publication. Bars on the right side of the zero line indicate that c‐indices were higher with ML; bars on the left of the zero line indicate c‐indices were higher with CSMs. Outcomes: Ben‐Assuli 2019 (1) = 90 day readmission; Ben‐Assuli 2019 (2) = 60 day readmission; Ben‐Assuli 2019 (3) = 30 day readmission; Mortazavi 2016 (1) = 30 day all‐cause readmission, Mortazavi 2016 (2) = 30 day HF readmission, Mortazavi 2016 (3) = 180 day all‐cause readmission, Mortazavi 2016 (4) = 180 day HF readmission, Sohrabi 2019 (1) = 1 month HF readmission, Sohrabi 2019 (2) = 3 month readmission. CSM, conventional statistical model; ML, machine learning.