Fatigue Is Associated with Poor Sleep in People with Multiple Sclerosis and Cognitive Impairment

Table 2

Associations between fatigue (MFIS and FSS scores), sleep quality (PSQI global score), and demographic characteristics.

	Fatigue scale
	MFIS		FSS
	𝐹 value	𝑃	𝐹 value	𝑃
Age (years)	6.98	0.01	0.08	0.78
Gender	0.74	0.39	0.22	0.64
Type of MS	0.01	0.93	1.93	0.17
EDSS	7.40	0.01	2.77	0.10
Disease duration	0.89	0.35	0.79	0.38
PSQI global	15.60	<0.01	12.09	<0.01

MFIS: Modified Fatigue Impact Scale, FSS: Fatigue Severity Scale, PSQI: Pittsburg Sleep Quality Index, EDSS: expanded disability status scale.
Bolded values indicate statistically significant associations.