| Characteristic . | Age at the time of ICD implantation a . | P -value . | ||
|---|---|---|---|---|
| . | <65 years, mean = 50 years ( n = 248) . | 65–75 years, mean = 70 years ( n = 135) . | >75 years, mean = 80 years ( n = 119) . | . |
| Female sex | 80 (32) | 25 (19) | 21 (18) | 0.001 |
| History of cigarette smoking | 87 (51) | 54 (69) | 44 (54) | 0.001 |
| Indication for ICD implantation | ||||
| Prior sudden cardiac death | 72 (37) | 45 (42) | 24 (26) | 0.04 |
| Primary prevention of sudden death | 54 (22) | 25 (19) | 30 (25) | 0.43 |
| History of congestive heart failure | 155 (67) | 104 (85) | 102 (90) | <0.001 |
| Left ventricular ejection fraction ≤35% | 104 (76) | 68 (70) | 70 (74) | 0.55 |
| Coronary disease | ||||
| Ischaemic cardiomyopathy | 69 (45) | 76 (75) | 76 (77) | <0.001 |
| Prior revascularization | 56 (23) | 67 (50) | 58 (49) | <0.001 |
| Renal disease | ||||
| Chronic renal insufficiency | 4 (2) | 8 (8) | 10 (10) | 0.006 |
| End-stage renal disease | 2 (1) | 3 (3) | 3 (3) | 0.33 |
| Prior stroke | 6 (3) | 6 (6) | 12 (12) | 0.005 |
| Hypertension | 73 (34) | 65 (63) | 56 (55) | <0.001 |
| Diabetes mellitus | 32 (15) | 22 (22) | 23 (23) | 0.16 |
| Chronic obstructive pulmonary disease | 14 (7) | 13 (13) | 15 (15) | 0.04 |
| Malignancy | 14 (7) | 24 (24) | 15 (15) | <0.001 |
| Dyslipidaemia | 61 (28) | 43 (42) | 32 (32) | 0.06 |
| Characteristic . | Age at the time of ICD implantation a . | P -value . | ||
|---|---|---|---|---|
| . | <65 years, mean = 50 years ( n = 248) . | 65–75 years, mean = 70 years ( n = 135) . | >75 years, mean = 80 years ( n = 119) . | . |
| Female sex | 80 (32) | 25 (19) | 21 (18) | 0.001 |
| History of cigarette smoking | 87 (51) | 54 (69) | 44 (54) | 0.001 |
| Indication for ICD implantation | ||||
| Prior sudden cardiac death | 72 (37) | 45 (42) | 24 (26) | 0.04 |
| Primary prevention of sudden death | 54 (22) | 25 (19) | 30 (25) | 0.43 |
| History of congestive heart failure | 155 (67) | 104 (85) | 102 (90) | <0.001 |
| Left ventricular ejection fraction ≤35% | 104 (76) | 68 (70) | 70 (74) | 0.55 |
| Coronary disease | ||||
| Ischaemic cardiomyopathy | 69 (45) | 76 (75) | 76 (77) | <0.001 |
| Prior revascularization | 56 (23) | 67 (50) | 58 (49) | <0.001 |
| Renal disease | ||||
| Chronic renal insufficiency | 4 (2) | 8 (8) | 10 (10) | 0.006 |
| End-stage renal disease | 2 (1) | 3 (3) | 3 (3) | 0.33 |
| Prior stroke | 6 (3) | 6 (6) | 12 (12) | 0.005 |
| Hypertension | 73 (34) | 65 (63) | 56 (55) | <0.001 |
| Diabetes mellitus | 32 (15) | 22 (22) | 23 (23) | 0.16 |
| Chronic obstructive pulmonary disease | 14 (7) | 13 (13) | 15 (15) | 0.04 |
| Malignancy | 14 (7) | 24 (24) | 15 (15) | <0.001 |
| Dyslipidaemia | 61 (28) | 43 (42) | 32 (32) | 0.06 |
a Values are given in number (%).
| Characteristic . | Age at the time of ICD implantation a . | P -value . | ||
|---|---|---|---|---|
| . | <65 years, mean = 50 years ( n = 248) . | 65–75 years, mean = 70 years ( n = 135) . | >75 years, mean = 80 years ( n = 119) . | . |
| Female sex | 80 (32) | 25 (19) | 21 (18) | 0.001 |
| History of cigarette smoking | 87 (51) | 54 (69) | 44 (54) | 0.001 |
| Indication for ICD implantation | ||||
| Prior sudden cardiac death | 72 (37) | 45 (42) | 24 (26) | 0.04 |
| Primary prevention of sudden death | 54 (22) | 25 (19) | 30 (25) | 0.43 |
| History of congestive heart failure | 155 (67) | 104 (85) | 102 (90) | <0.001 |
| Left ventricular ejection fraction ≤35% | 104 (76) | 68 (70) | 70 (74) | 0.55 |
| Coronary disease | ||||
| Ischaemic cardiomyopathy | 69 (45) | 76 (75) | 76 (77) | <0.001 |
| Prior revascularization | 56 (23) | 67 (50) | 58 (49) | <0.001 |
| Renal disease | ||||
| Chronic renal insufficiency | 4 (2) | 8 (8) | 10 (10) | 0.006 |
| End-stage renal disease | 2 (1) | 3 (3) | 3 (3) | 0.33 |
| Prior stroke | 6 (3) | 6 (6) | 12 (12) | 0.005 |
| Hypertension | 73 (34) | 65 (63) | 56 (55) | <0.001 |
| Diabetes mellitus | 32 (15) | 22 (22) | 23 (23) | 0.16 |
| Chronic obstructive pulmonary disease | 14 (7) | 13 (13) | 15 (15) | 0.04 |
| Malignancy | 14 (7) | 24 (24) | 15 (15) | <0.001 |
| Dyslipidaemia | 61 (28) | 43 (42) | 32 (32) | 0.06 |
| Characteristic . | Age at the time of ICD implantation a . | P -value . | ||
|---|---|---|---|---|
| . | <65 years, mean = 50 years ( n = 248) . | 65–75 years, mean = 70 years ( n = 135) . | >75 years, mean = 80 years ( n = 119) . | . |
| Female sex | 80 (32) | 25 (19) | 21 (18) | 0.001 |
| History of cigarette smoking | 87 (51) | 54 (69) | 44 (54) | 0.001 |
| Indication for ICD implantation | ||||
| Prior sudden cardiac death | 72 (37) | 45 (42) | 24 (26) | 0.04 |
| Primary prevention of sudden death | 54 (22) | 25 (19) | 30 (25) | 0.43 |
| History of congestive heart failure | 155 (67) | 104 (85) | 102 (90) | <0.001 |
| Left ventricular ejection fraction ≤35% | 104 (76) | 68 (70) | 70 (74) | 0.55 |
| Coronary disease | ||||
| Ischaemic cardiomyopathy | 69 (45) | 76 (75) | 76 (77) | <0.001 |
| Prior revascularization | 56 (23) | 67 (50) | 58 (49) | <0.001 |
| Renal disease | ||||
| Chronic renal insufficiency | 4 (2) | 8 (8) | 10 (10) | 0.006 |
| End-stage renal disease | 2 (1) | 3 (3) | 3 (3) | 0.33 |
| Prior stroke | 6 (3) | 6 (6) | 12 (12) | 0.005 |
| Hypertension | 73 (34) | 65 (63) | 56 (55) | <0.001 |
| Diabetes mellitus | 32 (15) | 22 (22) | 23 (23) | 0.16 |
| Chronic obstructive pulmonary disease | 14 (7) | 13 (13) | 15 (15) | 0.04 |
| Malignancy | 14 (7) | 24 (24) | 15 (15) | <0.001 |
| Dyslipidaemia | 61 (28) | 43 (42) | 32 (32) | 0.06 |
a Values are given in number (%).
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