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. Author manuscript; available in PMC: 2012 Aug 1.

Published in final edited form as: J Psychosom Res. 2011 May 14;71(2):79–85. doi: 10.1016/j.jpsychores.2011.01.008

Table IV.

Hierarchical Regression Model: Disability

Model	Variable	R	R²	R² Change	F Change	df_1,2	F Change p	β ^*	t	p	sr²^*
1
	Biologics	.31	.10	.10	2.43	4,98	.05	-.05	-.47	.64	.00
	DMARDs							.28	2.66	.01	.07
	NSAIDs							.03	.26	.80	.00
	Other							-.23	-2.22	.03	.05

2
	Disease activity	.60	.36	.26	18.55	2,96	<.001	.51	5.98	<.001	.25
	(RADAR) DAS-28							.02	.21	.83	.00

3
	Personal mastery	.60	.36	.01	.46	2,94	.63	-.06	-.72	.48	.00
	Social network							.06	.70	.49	.00

4
	Active coping	.71	.50	.13	4.49	5,89	<.001	-.03	-.32	.75	.00
	Passive coping							.17	1.72	.09	.02
	Helplessness							.26	2.73	<.01	.04
	Internality							-.08	-.81	.42	.00
	Perceived stress							.06	.57	.57	.00

^*

β: Standardized regression coefficient

sr²: Unique variance