Table 1.

Baseline clinical characteristics of the study population

	Total population (n = 463)
Demographic data, n (%)
Male gender	349 (75)
Age (years)	62 ± 11
Clinical data, n (%)
Indication ICD therapy
Primary prevention	346 (75)
Secondary prevention	117 (25)
NYHA class
II	129 (28)
III	334 (72)
Left ventricular ejection fraction (%)	24 ± 7
QRS duration (ms)	165 ± 30
Creatinine (mg/dL)	1.35 ± 0.70
Ischaemic aetiology	233 (50)
History of myocardial infarction	200 (43)
History of bypass surgery	95 (21)
Pharmacological treatment
Amiodarone	135 (29)
Beta-blockers	350 (76)
ACE-inhibitors/ARBs	423 (91)
Diuretics	388 (84)
Digoxin	117 (25)
Statin	245 (53)