Table 3.

Scaled Euclidean distance between last-layer predictions of noise-adapted and standard models for noise-augmented and standard ECGs across different noise types at an SNR of 0.5.

Noise type	Standard model scaled euclidean distance (95% CI)	Noise-adapted model scaled euclidean distance (95% CI)	P-value
Portable ECG	0.50 (0.49–0.51)	0.41 (0.40–0.42)	<0.001
Electrode motion	0.56 (0.55–0.58)	0.49 (0.48–0.50)	<0.001
Muscle artifact	0.53 (0.52–0.54)	0.40 (0.39–0.41)	<0.001
Baseline wander	0.52 (0.51–0.53)	0.36 (0.36–0.37)	<0.001

SNR signal-to-noise ratio, ECG electrocardiogram, CI confidence interval, P-value probability value calculated using the paired t-test.