Skip to main content
. Author manuscript; available in PMC: 2026 Oct 18.
Published in final edited form as: J Am Coll Cardiol. 2026 Apr 14;87(14):1798–1813. doi: 10.1016/j.jacc.2026.01.087

FIGURE 2. Model Performance for 2-Year Incident AF Prediction.

FIGURE 2

(A) Discrimination of 2-year AF risk using CHARGE-AF (orange), ECG-AI) (green), and CH-AI (blue). The left plot depicts receiver-operating characteristic curves and the right plot depicts precision-recall curves. The legends depict the area under the curve (left) and the average precision (right).

(B) Calibration plots of predicted 2-year AF risk (x-axis) vs observed 2-year AF incidence (y-axis). Each plot contains 10 points representing score deciles and a smoothed curve obtained using adaptive hazard regression. On each plot is shown the integrated calibration index, a time-dependent error metric where lower values demonstrate smaller average error (see text). Models are represented by the same colors as in (A). PPV = positive predictive value; other abbreviations as in Figure 1.