Table 1.

Baseline population characteristics

	Total (n = 180)
Sex, male	146 (81.1)
Age (years)	70 (62–78)
ICD type
Single chamber	65 (36.1)
Dual chamber	49 (27.2)
Biventricular	66 (36.7)
Indication for defibrillator
Primary prevention	141 (78.3)
Secondary prevention	37 (20.5)
Other	2 (1.1)
Underlying heart disease
Ischaemic cardiomyopathy	85 (47.2)
Dilated cardiomyopathy	42 (23.3)
Hypertrophic cardiomyopathy	4 (2.2)
Arrhythmogenic right ventricular dysplasia	7 (3.9)
Brugada	14 (7.8)
Valvular heart disease	12 (6.7)
Other	12 (6.7)
None	4 (2.2)

Data are shown as median (interquartile range) and n (%) for binary variables