Table 2.

Participant demographics and group comparisons on disease variables, sleep, fatigue, depression.

	Total sample (N = 107) mean (SD)	Range
Age	44.71 (9.76)	23–64
Disease duration	8.91 (7.13)	0–31
PSQI total	7.07 (4.07)	1–18
MFIS physical	17.47 (8.00)	0–35
MFIS cognitive	16.00 (9.34)	0–38
MFIS psychosocial	3.40 (1.92)	0–8
CMDI mood	22.83 (10.07)	14–68
CMDI evaluative	19.38 (8.19)	14–61
CMDI vegetative	33.70 (9.72)	17–53
	Not sleep disturbed (N = 42) mean (SD)	Sleep disturbed (N = 65) mean (SD)	t-test, sig.
Age	46.00 (10.32)	43.88 (9.36)	t = 1.10, p = 0.274
Disease duration	8.19 (6.07)	9.38 (7.75)	t = −0.84, p = 0.401
PSQI sleep duration	0.24 (0.43)	0.95 (0.99)	t = −5.12, p < 0.001
PSQI sleep disturbances	1.12 (0.45)	1.60 (0.49)	t = −5.18, p < 0.001
PSQI sleep latency	0.50 (0.59)	1.49 (0.89)	t = −6.93, p < 0.001
PSQI daytime dysfunction	0.74 (0.63)	1.48 (0.77)	t = −5.42, p < 0.001
PSQI sleep efficiency	0.10 (0.48)	1.11 (1.25)	t = −5.88, p < 0.001
PSQI sleep quality	0.60 (0.50)	1.65 (0.80)	t = −8.39, p < 0.001
PSQI sleep medication	0.24 (0.66)	1.20 (1.29)	t = −5.08, p < 0.001
PSQI global score	3.36 (1.27)	9.48 (3.38)	t = −1.50, p < 0.001
MFIS physical	14.81 (7.82)	19.18 (7.70)	t = −2.84, p = 0.006
MFIS cognitive	12.62 (7.47)	18.18 (9.82)	t = −3.31, p = 0.001
MFIS psychosocial	2.79 (1.88)	3.80 (1.85)	t = −2.75, p = 0.007
CMDI mood	21.02 (9.85)	24.00 (10.11)	t = −1.50, p = 0.136
CMDI evaluative	18.26 (8.14)	20.10 (8.20)	t = −1.14, p = 0.257
CMDI vegetative	28.07 (5.22)	37.34 (10.24)	t = −6.16, p < 0.001

PSQI, Pittsburgh sleep quality index; MFIS, modified fatigue impact scale; CMDI, Chicago multiscale depression inventory.