| Definite diagnosis | Uncertain clinical diagnosis | Total cohort |
---|---|---|---|
Age, years | 56.0 ± 16.5 | 46.1 ± 15.9 | 54.8 ± 16.7 |
Age at diagnosis, years | 42.3 ± 16.6 | 36.5 ± 16.1 | 41.6 ± 16.6 |
Male sex | 487 (64) | 71 (56) | 558 (63) |
Severe phenotype | 209 (27) | 65 (52) | 274 (31) |
Sudden cardiac events | 84 (11) | 51Â (40) | 135Â (15) |
Heart failure | 7 (< 1) | 0 (0) | 7 (< 1) |
Transplantation | 9 (1) | 3 (< 1) | 12 (14) |
Phenotype extremes | 74 (10) | 8 (6) | 82 (9) |
Ventricular arrhythmia | 30 (4) | 3 (2) | 33 (4) |
Positive family history | 247 (32) | 36 (29) | 283 (32) |
Age at diagnosis ≤ 30 years | 192 (25) | 52 (41) | 244 (27) |
Age at diagnosis ≤ 10 years | 7 (< 1) | 0 (0) | 7 (< 1) |
Inherited cardiomyopathy | 662 (87) | 62 (49) | 724 (82) |
Inherited arrhythmia syndrome | 100 (13) | 24 (19) | 124 (14) |
Undiagnosed | 0 (0) | 40 (32) | 40 (5) |
Total | 762 (86) | 126 (14) | 888 (100) |