| Parameter | Category | Quality of life (CHAQ.MAC score) | p-value | |
| Mean | 75th centile | |||
| Age (years) | 0 - 5 | 1.00 | 3.00 | 0.353 |
| >5 - 10 | 5.58 | 11.50 | ||
| >10 - 15 | 1.79 | 0.75 | ||
| >15 | 3.43 | 0.00 | ||