Table 4.

Binary logistic regression models of depression and fatigue as predictors of underestimation.

	χ2	B	SE (B)	Wald	Exp (B)
PHQ-8
Step 1	9.91*
Age		−0.39	0.02	3.25	0.96
Gender		−1.47	0.60	6.06*	0.23
Education (years)		−0.26	0.09	0.08	0.98
MS duration		0.04	0.03	1.36	1.04
Step 2	22.04***
Age		−0.03	0.03	1.76	0.97
Gender		−1.18	0.66	3.22	0.31
Education (years)		0.64	0.10	0.39	1.07
MS duration		0.07	0.04	3.81	1.07
PHQ-8		0.25	0.07	15.02***	1.29
FSS
Step 1	7.55*
Gender		−1.32	0.56	5.59*	0.27
Education (years)		−0.07	0.09	0.57	0.94
Step 2	15.21***
Gender		−1.29	0.59	4.75*	0.28
Education (years)		0.01	0.10	0.01	1.01
FSS		0.07	0.02	12.66***	1.07
PHQ-8 & FSS
Step 1	9.91*
Age		−0.39	0.02	3.25	0.96
Gender		−1.47	0.60	6.06*	0.23
Education (years)		−0.26	0.09	0.08	0.98
MS duration		0.04	0.03	1.36	1.04
Step 2	26.12***
Age		−0.04	0.03	2.01	0.96
Gender		−1.25	0.67	3.46	0.29
Education (years)		0.92	0.11	0.73	1.10
MS duration		0.07	0.04	3.57	1.07
PHQ-8		0.21	0.07	9.18**	1.23
FSS		0.42	0.02	3.88*	1.04

Notes.

^*p < 0.05.

^**p < 0.01.

^***p < 0.001.

Gender coded as 0 = female and 1 = male.

Abbreviations: FSS = Fatigue Severity Scale; PHQ-8 = Patient Health Questionnaire-8.