Comparison of patients by the presence of complications
| Complication | No complication | P values | |
| Age, years (median (IQR)) | 10.74 (0.23–16.6) | 10.4 (0.01–18.43) | >0.999 |
| Weight, kg (median (range)) | 39.6 (5.6–77) | 39.6 (2–101.4) | >0.999 |
| Emergency procedure, n% | 10% (n=2/21) | 8% (n=11/140) | >0.999* |
| ASH distribution, n% | 65% (n=13/20) | 67% (n=91/136) | >0.999 |
| Systolic dysfunction, n% | 20% (n=4/20) | 4% (n=6/136) | 0.064 |
| Diastolic dysfunction, n% | 89% (n=16/18) | 74% (n=71/96) | >0.999 |
| LVOT gradient, n%>50 mm Hg | 24% (n=5/21) | 17% (n=23/136) | >0.999* |
| MLVWT>30 mm, n% | 15% (n=3/20) | 16% (n=20/129) | >0.999* |
Data expressed as % (n=proportion of patients with available data). Comparisons performed using χ2 test unless otherwise stated.
*Fisher’s exact test.
ASH, asymmetric septal hypertrophy; LVOT, left ventricular outflow tract; MLVWT, maximal left ventricular wall thickness.