Table 2.

Number of Records in Each Alarm Type and Their Correspondence to the Gold Standard

		Alarm annotation by clinicians							Total records	PPV	% of mismatched true alarms
		Aystole	EB	ET	VF	VT	AF	SR
Alarm type from monitor	Aystole	19	2	2	0	4	18	123	168	11.31	29.63
	EB	0	60	7	0	0	66	132	265	22.64	10.45
	ET	0	1	39	0	3	96	89	228	17.11	9.3
	VF	0	0	2	10	8	5	21	46	21.74	50
	VT	0	1	5	3	132	26	79	246	53.66	6.38
Total records		19	64	55	13	147	211	444	953

AF indicates atrial fibrillation; EB, extreme bradycardia; ET, extreme tachycardia; PPV, positive predictive value; SR, sinus rhythm; VF, ventricular fibrillation; and VT, ventricular tachycardia.