Symptoms

Grade

No symptoms at all

0

No significant disability despite symptoms; able to carry out all usual duties and activities

1

Slight disability; unable to carry out all previous activities, but able to look after own affairs without assistance

2

Moderate disability; requiring some help, but able to walk without assistance

3

Moderately severe disability; unable to walk without assistance, unable to attend to needs without assistance

4

Severe disability; bedridden, incontinent, and requiring constant nursing care and attention

5

Dead

6