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| N | % | |
| Gender | ||
| Male | 51,581 | 46.71% |
| Self-recognized symptoms | ||
| Yes | 39,129 | 35.43% |
| Past history | ||
| Yes | 20,404 | 18.48% |
| Family history | ||
| Yes | 30,750 | 27.85% |
| Missing | 6,711 | 6.08% |
| Simplified ECG test | ||
| Abnormal | 39,427 | 35.70% |
| Simplified PCG test | ||
| Abnormal | 6,949 | 6.29% |
| Total/N | 110,431 | 100.00% |
