External validation of multimodal termination of resuscitation rules for out-of-hospital cardiac arrest patients in the COVID-19 era

Table 3 Logistic regressions of factors associated with unfavorable survival outcomes

	Dead	Survival	Univariate		Multivariable^a
	Dead	Survival	Crude Odds (95% CI)	P value	Adjusted Odds (95% CI)	P value
Age (years)	75 [63–80]	62 [57–69]	1.05 (1.00–1.10)	0.070
Age > 70 years	100 (61.3)	1 (14.3)	9.52 (1.12–80.97)	0.039	6.43 (0.28–148.0)	0.244
Age > 60 years	127 (77.9)	4 (57.1)	2.64 (0.56–12.36)	0.216	0.44 (0.02–8.83)	0.591
Location, non-public places	118 (72.4)	3 (42.9)	3.49 (0.75–16.24)	0.107
Not witnessed by bystander	64 (39.3)	3 (42.9)	0.86 (0.18–3.97)	0.999
Not witnessed by EMT	139 (85.3)	4 (57.1)	4.34 (0.91–20.63)	0.081	1.56 (0.06–39.89)	0.782
No bystander CPR	108 (66.3)	4 (57.1)	1.47 (0.32–6.81)	0.691
Initial acquired rhythm
Non-shockable rhythm in the field	152 (93.3)	3 (42.9)	18.42 (3.65–92.8)	0.001	15.32 (0.04–663.7)	0.378
Asystole in the field	107 (65.6)	0 (0)	–	0.001	–
Asystole in the ED	127 (77.9)	0 (0)	–	< 0.001	–
No prehospital shock delivery	144 (88.3)	4 (57.1)	5.68 (1.18–27.4)	0.047	6.06 (0.26–101.1)	0.262
No prehospital ROSC	161 (98.8)	1 (14.3)	48.30 (3.83–109.3)	< 0.001	26.24 (1.48–463.3)	< 0.001

CI confidence interval, CPR cardiopulmonary resuscitation, ED emergency department, EMT emergency medical technician, OR odds ratio, ROSC return of spontaneous circulation
^aAdjusted for age, gender, location of arrest, primary electrocardiogram (ECG), witness status, and whether prehospital ROSC was achieved before arriving at the ED

ISSN: 1757-7241