Table 1.

Correct rhythm of 89 primary care patients with an ECG computer based erroneous interpretation of atrial fibrillation or atrial fibrillation after a post hoc review of three experts in electrophysiology.

	Computer rhythm interpretation
	Atrial fibrillation	Atrial flutter
Correct rhythm	N (%)	N (%)	p
Sinus rhythm	2 (3)	12 (44)	<.001
Sinus arrhythmia	5 (8)	1 (4)	.6
SR with sinus arrest	2 (3)	0 (0)	n/a
Sinus rhythm with PAC	33 (53)	2 (7)	<.001
Sinus rhythm with PVC	6 (10)	1 (4)	.3
Sinus rhythm with PVC and PAC	1 (2)	1 (4)	.5
Sinus rhythm with non-sustained SVT	1 (2)	0 (0)	n/a
Sinus rhythm with 2nd AV block	6 (10)	0 (0)	n/a
SVT (sustained)	2 (3)	9 (33)	<.001
VT	1 (2)	0 (0)	n/a
Atrial pacing with PAC	3 (5)	1 (4)	.8

PAC: premature atrial complexes; PVC: premature ventricular complexes; SVT: supraventricular tachycardia (including ectopic atrial tachycardia); VT: ventricular tachycardia.

χ²-test was used to compare differences between the interpretation of atrial fibrillation and atrial.