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Demographics of surveyed Fontan patients (n = 528)
| Male (%) | 333 (63.1) |
| Age (mean ± SEM) at DOO (months) | 28.5 ± 0.6 |
| Followed-up at UMHS (%) | 122 (23) |
| Underlying CHD (%)a | |
| HLHS | 274 (51.9) |
| TA | 81 (15.3) |
| TGA | 77 (14.6) |
| PA | 66 (12.5) |
| DILV | 62 (11.7) |
| PA/IVS | 42 (8.0) |
| CAVSD | 31 (5.9) |
| Heterotaxy | 15 (2.8) |
| Ebstein’s anomaly | 8 (1.5) |
| SV | 7 (1.3) |
| Dextrocardia | 2 (0.4) |
| TA | 2 (0.4) |
| TOF | 1 (0.2) |
The addition of percentages exceeds 100 because some patients had more than one condition
