Table 2.

Results of training set 1^a for initial automated atrial fibrillation identification using signal and noise detection and R–R interval indices, from selected waveforms without premature beats.

Automated algorithm atrial fibrillation status	Manual atrial fibrillation status
	Atrial fibrillation	No atrial fibrillation	Total
Atrial fibrillation	24	0	24
No atrial fibrillation	0	25	25
Total	24	25	49b

^aThe sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were 100% (95% CI 86%-100%), 100% (95% CI 86%-100%), 100%, 100%, and 100% (95% CI 93%-100%), respectively.

^bOne patient had noise in the waveform tracings that were unable to be run through the algorithm due to lack of 3 consecutive 2-minute segments of majority noise-free time.