Table 4. Accuracy of detecting ion channel blocks from AP shape changes from computer simulation data using multi-class logistic regression.

Results are reported as mean (standard deviation). Standard deviations were obtained by repeating the model fitting, hyperparameter tuning, and testing process on different training/test dataset splits as described in Methods.

Model	Overall Accuracy	INa Block (TTX)	IKr/INa Block (Flecainide)	ICa Block (Nifedipine)	IKr Block (E-4031)
Simulation Data	0.9996 (6e-5)	0.9994 (2e-4)	n/a	0.9988 (3e-4)	0.9999 (5e-5)
Experimental Data	0.95 (0.03)	0.95 (0.07)	0.94 (0.08)	0.96 (0.06)	0.96 (0.07)