Fatigue and sleep
Fatigue
MULTIPLE SCLEROSIS
A 19-item self-report inventory (Pittsburgh Sleep Quality Inventory, PSQI [Fatigue level was also examined through the Modified Fatigue Impact Scale (M-FIS). The M-FIS is a 21-item self-report questionnaire developed by the US NMSS (National Multiple Sclerosis Society) and derived from the original 40-item Fatigue Scale [