| Severe group (n = 278) | Moderate group (n =1105) | Mild group (n =1243) | |
| Eating | - | 0.004** | -** |
| Grooming | - | 0.011** | 0.017** |
| Bathing | - | 0.006** | -** |
| Dressing upper body | - | -** | 0.006** |
| Dressing lower body | - | 0.004** | 0.011** |
| Toileting | - | -** | -** |
| Bladder management | - | 0.007** | 0.007** |
| Bowel management | - | -** | -** |
| Gait/Wheelchair | - | -** | -** |
| Climbing stairs | - | 0.005** | 0.003** |