Table 2

Performance-status scores for evaluating the severity of fatigue in CFS patients.

Scores

Condition

0

No complaints; able to carry on normal activity without fatigue.

1

Able to carry on normal activity, but sometimes feels fatigue.

2

Able to carry on normal activity or to do active work with effort; requires occasional rest.

3

Several days a month, unable to carry on normal activity or to do active work; requires rest at home without work.

4

Several days a week, unable to carry on normal activity or to do active work; requires rest at home without work.

5

Unable to carry on normal activity or to do active work at all, although able to perform light tasks; requires rest at home without work for several days a week.

6

Requires rest without work at home for over one-half of a week; able to do light tasks in good health.

7

Unable to carry on normal activity or to do light tasks at all; able to care for self without assistance.

8

Remains in bed for more than one-half of each day; able to care for self to some extent, but requires frequent assistance.

9

Unable to care for self; must remain in bed with day-long assistance.

Okada et al. BMC Neurology 2004 4:14   doi:10.1186/1471-2377-4-14