Patient characteristics for both groups
| SC | LC | P value | |
| Sex | |||
| Male | 9 (45) | 11 (55) | 0.50 |
| Age, years | 12.8±2.4 | 14.6±1.7 | 0.01 |
| Diagnosis | |||
| Medical | 16 (80) | 8 (40) | 0.008 |
| Surgical | 4 (20) | 12 (60) | 0.01 |
Values expressed as N (%) or mean±SD.
LC, long cannulas; SC, short cannulas.