Table II.

Associations between receiving an ICD shock at a specified time period and baseline characteristics (N=51)

ICD shock	Variable	Chi-square (χ2)	p
1-3 months	EF ≤ 35%	4.82	0.03
	Charlson Co-morbidity score	4.81	0.03
3-6 months	VT > 10 seconds	12.40	0.009
	Beta blocker	3.59	0.05
6-12 months	VT > 10 seconds	6.44	0.05
	CHF	9.70	0.002

ICD = implantable cardioverter defibrillator

EF=ejection fraction

VT=ventricular tachycardia

CHF=congestive heart failure