Applying the termination of resuscitation rules to out-of-hospital cardiac arrests of both cardiac and non-cardiac etiologies: a prospective cohort study

Table 4 Diagnostic accuracy of termination of resuscitation rules for 1-month mortality

Etiology of cardiac arrest		Deaths	Survival	Sensitivity (95 % CI)	Specificity (95 % CI)	FPR (95 % CI)	PPV (95 % CI)	NPV (95 % CI)
BLS TOR rule
All types
	Met criteria	4165	28	0.820	0.918	8.2 %	0.993	0.255
	Did not meet criteria	917	314	(0.809–0.830)	(0.884–0.945)	(5.5–11.6 %)	(0.990–0.996)	(0.231–0.280)
Cardiac etiology
	Met criteria	2044	16	0.798	0.938	6.2 %	0.992	0.318
	Did not meet criteria	517	241	(0.782–0.814)	(0.901–0.964)	(3.6–9.9 %)	(0.987–0.996)	(0.285–0.352)
Noncardiac etiology
	Met criteria	2121	12	0.841	0.859	14.1 %	0.994	0.154
	Did not meet criteria	400	73	(0.826–0.855)	(0.766–0.925)	(7.5–23.4 %)	(0.990–0.997)	(0.123–0.190)
ALS TOR rule
All types
	Met criteria	1681	20	0.287	0.913	8.7 %	0.988	0.048
	Did not meet criteria	4170	210	(0.276–0.299)	(0.869–0.946)	(5.4–13.1 %)	(0.982–0.993)	(0.042–0.055)
Cardiac etiology
	Met criteria	947	9	0.299	0.941	5.9 %	0.991	0.061
	Did not meet criteria	2220	144	(0.283–0.315)	(0.891–0.973)	(2.7–10.9 %)	(0.982–0.996)	(0.052–0.071)
Noncardiac etiology
	Met criteria	734	11	0.273	0.857	14.3 %	0.985	0.033
	Did not meet criteria	1950	66	(0.257–0.291)	(0.759–0.926)	(7.4–24.1 %)	(0.974–0.993)	(0.025–0.042)

ALS advanced life support, BLS basic life support, CI confidence interval, FPR false-positive rate, NPV negative predictive value, PPV positive predictive value, TOR termination of resuscitation

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