. Author manuscript; available in PMC: 2020 Feb 1.

Published in final edited form as: Psychol Health Med. 2018 Sep 30;24(2):207–220. doi: 10.1080/13548506.2018.1524152

Table 4.

Longitudinal Multilevel Models for Physical Function (FIQ Physical Function Subscale)

	Main Effects Model		Interaction Model
	Wald χ²(11) = 1678.48, p < .001		Wald χ²(12) = 1691.58, p < .001

Fixed Effect	B	p	B	p	Marginal B	p
Intervention Arm
Control v SS	−1.1936	.176	−1.2176	.167	-	-
Control v Combo	−1.2852	.143	−1.2779	.144	-	-
Age	−.1530	< .001^*	−.1550	< .001^*	-	-
ASES	−.2757	< .001^*	−.2440	< .001^*	−.2842	< .001
CES-D	.7121	< .001^*	.7158	< .001^*	-	-
Symptom Duration	.0353	.216	.0348	.222	-	-
Time	.1025	.630	1.8200	.014^*	.1195	.571
Physical Abuse	1.8392	1.1645	1.8767	.106	-	-
Sexual Abuse	.3240	1.1323	.3228	.775	-	-
Emotional Abuse	−.0754	.928	−.0571	.946	-	-
Fortnightly Exercise	2.3253	< .001^*	2.2767	< .001^*	-	-
Time × ASES			−.0284	.015^*	-	-

Note: FIQ = Fibromyalgia Impact Questionnaire; SS = Social Support Group; Combo = Social Support plus Education Group; ASES = Arthritis Self-Efficacy Scale; CES-D = Center for Epidemiological Study Depression Scale.

p ≤ .05