Table 2. Summary of the Major SICD Studies.

	SICD-IDE Study	Effortless Registry	SICD-PAS Study
Number of Patients	330	472	1637
Average Age, yrs	51.9 ± 15.5	49 ± 18	53.2 ± 15
Mean EF, %	36.1 ± 15.9	42 ± 19	32 ± 14.6
Complications, %	7.9% (180-day complication rate)	3% and 6% (30-day and 1 year complication rate respectively)	3.8% (30-day complication rate)
Acute Conversion Success of Induced VF	100%	99.7%	98.7%
Spontaneous VT/VF Total Shock Efficacy	97.1%	100%	N/A*

*The SICD-PAS was an acute complication study. Long-term Follow-up not published at this time. EF: ejection fraction; IDE: Investigational Device Exemption; PAS: post approval registry; SICD: subcutaneous implantable cardioverter defibrillator; VT/VF: ventricular tachycardia/ventricular fibrillation. This table is modified from Gold MR.[24]