Baseline characteristics of the study population
| Parameters | Patients with TGA (n=103) | Controls (n=77) | P value |
| Male | 74 (71.8%) | 51 (66.2%) | 0.51* |
| Age at CMR (years) | 16.7 (4.3–39.6) | 15.4 (6.3–43.2) | 0.11 |
| Age between ASO and CMR (years) | 16.7 (4.3–38.4) | NA | NA |
| Height (cm) | 172 (155; 177.8) | 168 (155.8; 177) | 0.46 |
| Weight (kg) | 61.5 (47.3; 75) | 58 (50.8; 68.3) | 0.36 |
| Heart rate (1/min) | 74 (64.3; 85) | 77 (66; 87.3) | 0.36 |
| BMI (kg/m2) | 20.7 (17.8; 23.7) | 20.7 (18.7; 23.5) | 0.84 |
| BSA (m2) | 1.7 (1.4; 1.9) | 1.6 (1.5; 1.8) | 0.26 |
Data are expressed as median and 1st and 3rd quartiles. Age is expressed as median and range. P values are calculated by Mann-Whitney U test.
*P value derived from Fisher’s exact test.
ASO, arterial switch operation; BMI, body mass index; BSA, body surface area; CMR, cardiovascular magnetic resonance; NA, not applicable; TGA, transposition of the great arteries.