Table 4.

Logistic regressions for DePaul Symptom Questionnaire subscales predicting ceiling effects among Multidimensional Fatigue Inventory-20 and RAND SF-36 subscales

Measure	Autonomic/Neuroe ndocrine/Immune		Cognitive		Post exertional malaise		Sleep
	Odds ratio	95% CI	Odds ratio	95% CI	Odds ratio	95% CI	Odds ratio	95% CI
Multidimensional Fatigue Inventory-20
General fatigue	1.00	.99 – 1.02	1.00	.98 – 1.03	1.01***	1.06 – 1.13	1.01	.96 – 1.07
Physical fatigue	.99	.98 – 1.00	.98	.96 – 1.01	1.12***	1.08 – 1.16	1.02	.96 – 1.08
Mental fatigue	1.00	.98 – 1.03	1.12***	1.05 – 1.20	1.01	.94 – 1.08	.95	.84 – 1.07
Reduced activity	1.02*	1.00 – 1.03	.98	.95 – 1.01	1.09***	1.05 – 1.14	.94	.88 – 1.01
RAND SF-36
Physical functioning	1.06**	1.02 – 1.11	.93*	.87 – .99	1.16*	1.02 – 1.31	.99	.86 – 1.13
Role limitations due to physical health	.98	.96 – 1.00	1.04	1.01 – 1.08	1.14***	1.09 – 1.19	.98	.91 – 1.05
Role limitations due to emotional health	.99	.98 – 1.01	1.04**	1.01 – 1.07	1.03	1.00 – 1.07	1.07	1.00 – 1.14
Energy/fatigue	1.00	.99 – 1.02	1.00	.97 – 1.03	1.20***	1.13 – 1.28	.91*	.84 – .99
Social functioning	1.00	.99 – 1.02	1.00	.97 – 1.03	1.12***	1.12 – 1.27	.95	.88 – 1.02
Pain	1.03**	1.01 – 1.05	.97	.93 – 1.00	1.09**	1.03 – 1.15	.99	.91 – 1.07
General health	1.00	.98 – 1.02	1.03	.99 – 1.07	1.05	.99 – 1.10	1.04	.95 – 1.13

Note.

^*p < .05;

^**p < .01;

^***p < .001