0 | No disability; no symptoms at all |
1 | No significant disability despite symptoms: able to carry out all usual activities despite symptoms |
2 | Slight disability: no assistance with one won affairs but unable to carry out all previous activities |
3 | Moderate disability: requiring some help, but able to walk without assistance |
4 | Moderately severe disability: requiring assistance to walk and to attend to own bodily needs |
5 | Severe disability: bedridden, incontinent and requiring constant nursing care and attention |
6 | Dead |