. Author manuscript; available in PMC: 2014 Jun 16.

Published in final edited form as: J Cogn Psychother. 2014 Feb 1;28(1):3–19. doi: 10.1891/0889-8391.28.1.3

TABLE 3.

F Statistics for Fixed Effects in Predicting Depression: Assessing Mediation

Cognitive Factor
Model Term	Cognitive Distortions	Cognitive Avoidance	Positive Outlook	Solution-Focused Thinking
Time effect
Linear	11.92^**	13.67^**	12.1^**	13.45^**
Quadratic	8.37^**	6.44^*	6.90^*	8.45^**
Treatment effect
Treatment × Time Interaction
Linear	5.13^*	6.31^**	5.88^**	5.83^**
Quadratic	4.03^*	4.93^*	5.23^*	4.96^*
Cognitive construct effect	11.48^*	6.89^*	26.95^**	3.38
Cognitive Construct × Time Interaction
Linear	9.61^**	4.46^*	27.07^**	2.04
Quadratic	8.6^**	4.77^*	20.97^**	1.62
Cognitive Construct × Treatment Interaction	1.05	0.15	0.17	1.92
Cognitive Construct × Treatment × Time Interaction
Linear	1.05	1.49	1.83	0.52
Quadratic	0.74	1.53	1.78	0.43
Site effect	1.59	2.35^*	1.40	2.35^*

Note. Model includes linear and quadratic effects of time.

p < .05.

^**

p < .01.