| Grade |
Definition |
| 0 |
Fully active, able to carry on all pre‐disease performance without restriction |
| 1 |
Restricted in physically strenuous activity but ambulatory and able to carry out work of a light or sedentary nature, e.g.
light house work, office work |
| 2 |
Ambulatory and capable of all self care, but unable to carry out any work activities. Up and about more than 50% of
waking hours |
| 3 |
Capable of only limited self care, confined to bed or chair more than 50% of waking hours |
| 4 |
Completely disabled. Cannot carry out any self care. Totally confined to bed or chair |
| 5 |
Dead |
