Table 1:

Patient Population (91 subjects that experienced an event and were followed for at least 90 days) in the ICD cohort during the study period from September 1, 2006 until June 30, 2010

	Subjects with any type of VA		Subjects with sustained VA
	N (Total)	N (with characteristics)	N (Total)	N (with characteristics)
Age (years)	91	65.0 (33–89)	25	62.0 (37–86)
Gender (male)	91	70 (77%)	25	21 (84%)
Race	91		25
White		83 (91%)		23 (92%)
Black		7 (8%)		2 (8%)
Other		1 (1%)
BMI (kg/m2)	91	27.7 (15.6–56.7)	25	29.6 (21.7–55.6)
Structural heart disease	91		25
Ischemic		57 (63%)		18 (72%)
Nonischemic		26 (29%)		6 (24%)
Other		9 (10%)		2 (8%)
Left ventricular ejection fraction (%)	90	25.0 (10–70)	25	25 (10–55)
History of congestive heart failure	91	55 (60%)	25	15 (60%)
CHF class I		13 (14%)		4 (16%)
II		19 (21%)		5 (20%)
III		23 (25%)		6 (24%)
IV
Co-morbidities
Pulmonary Disease	91	17 (19%)	25	4 (16%)
Diabetes	89	28 (46%)	24	7 (29%)
Hypertension	88	52 (59%)	25	18 (72%)
Medications
Beta blocker	88	84 (95%)	25	24 (96%)
Antiarrhythmic agents: (Amiodarone, sotalol, or others not including beta blockers)	88	10 (11%)	25	5 (20%)
Platelet Aggregation Inhibitors	88	66 (75%)	25	19 (76%)
Smoking
Current	86	10 (12%)	25	3 (12%)
Former	73	46 (63%)	21	11 (52%)
Never	82	56 (68%)	24	14 (58%)
Lived with Smoker	91	57 (63%)	25	17 (68%)

Values are median (range) or n (%). Values may not always add up to 91 or 25 because of missing data. VA= ventricular arrhythmias; BMI= body mass index; CHF= congestive heart failure