Table 1 Demographic and personal characteristics of the 22 SMA1 children
| Sex (%) | |
|---|---|
| Male | 36 |
| Female | 64 |
| Age (years) | |
| Median | 5 |
| Range | 3–11 |
| SMA1 subtype (%) | |
| 1a | 9 |
| 1b | 36 |
| 1c | 55 |
| Age at diagnosis (months) | |
| Median | 6.2 |
| Range | 0.1–9 |
| Mechanical ventilation (%) | |
| Invasive ventilation | 31.8 |
| Non-invasive ventilation | 68.2 |
