Geographical distribution of the most frequent causes of sudden death (including SCA with survival) ≤35 years (n=145) and >35 years (n=66)
| Causes ≤35 years | Africa (n=8) | Asia (n=8) | Australia (n=6) | Europe (n=84) | North America (n=27) | South America (n=12) |
| Coronary artery disease, n | 2 | 1 | 0 | 11 | 1 | 0 |
| Sudden unexplained death, n | 1 | 0 | 2 | 22 | 3 | 4 |
| Cardiomyopathy, n | 1 | 2* | 0 | 12† | 6‡ | 5§ |
| Coronary artery anomaly¶, n | 0 | 0 | 0 | 4 | 9 | 0 |
| Myocarditis, n | 0 | 0 | 1 | 6 | 0 | 0 |
| Valvular heart disease, n | 0 | 0 | 0 | 4 | 2 | 0 |
| Electrical heart disease¶, n | 0 | 0 | 2 | 1 | 1 | 1 |
| Other (including trauma), n | 4 | 5 | 1 | 24 | 5 | 2 |
| Causes >35 years | Africa (n=2) | Asia (n=6) | Australia (n=15) | Europe (n=30) | North America (n=10) | South America (n=3) |
| Coronary artery disease, n | 0 | 5 | 13 | 22 | 9 | 1 |
| Sudden unexplained death, n | 0 | 0 | 1 | 2 | 0 | 0 |
| Cardiomyopathy, n | 0 | 0 | 0 | 1 | 0 | 0 |
| Myocarditis, n | 0 | 0 | 0 | 0 | 0 | 1** |
| Valvular heart disease, n | 1 | 0 | 0 | 0 | 0 | 0 |
| Other (including trauma), n | 1 | 1 | 1 | 5 | 1 | 1 |
*Hypertrophic cardiomyopathy: n=1; cardiomyopathy not otherwise specified: n=1.
†Hypertrophic cardiomyopathy: n=5; arrhythmogenic right ventricular cardiomyopathy: n=3, cardiomyopathy not otherwise specified: n=3, dilated cardiomyopathy n=1.
‡Hypertrophic cardiomyopathy: n=4; arrhythmogenic right ventricular cardiomyopathy: n=1, cardiomyopathy not otherwise specified: n=1.
§Hypertrophic cardiomyopathy: n=1; ischaemic cardiomyopathy n=1, cardiomyopathy not otherwise specified: n=3.
¶Coronary artery anomaly and electrical heart disease were not observed in the age group >35 years.
**Histopathological features of Chagas disease.
SCA, sudden cardiac arrest .