Table 2. Linear Regression of Cognitive Behavioral Group Therapy (CBGT)–Associated Changes vs Mindfulness-Based Stress Reduction (MBSR)–Associated Changes in Negative Emotion Ratings and Functional Magnetic Resonance Imaging (fMRI) Blood Oxygen Level–Dependent (BOLD) Signal Associated With Severity of Social Anxiety Symptoms 1 Year Posttreatment (N = 61).

Measure	R 2	F 4,57	P value	β (SE; 95% CI)a	t	P value
Negative emotion rating
Reappraisal	.18	3.03	.03
Pretreatment				0.06 (0.22; −0.38 to 0.50)	0.29	.78
Posttreatment				0.63 (0.24; 0.15 to 1.11)	2.61	.01
CBGT vs MBSR				0.85 (0.48; −0.11 to 1.82)	1.77	.08
CBGT vs MBSR × posttreatment				−0.49 (0.22; −0.94 to −0.04)	2.18	.03
Acceptance	.11	1.77	.15
Pretreatment				−0.09 (0.23; −0.55 to 0.37)	0.40	.69
Posttreatment				0.52 (0.22; 0.08 to 0.96)	2.37	.02
CBGT vs MBSR				0.29 (0.49; −0.68 to 1.27)	0.60	.55
CBGT vs MBSR × posttreatment				−0.20 (0.21; −0.62 to 0.21)	0.99	.33
fMRI BOLD Signal
Reappraisal	.12	1.81	.14
Pretreatment				0.67 (0.81; −0.96 to 2.30)	0.82	.42
Posttreatment				0.87 (0.84; −0.80 to 2.55)	1.04	.30
CBGT vs MBSR				−0.34 (0.17; −0.67 to −0.01)	2.06	.045
CBGT vs MBSR × posttreatment				1.93 (0.83; 0.26 to 3.60)	2.31	.02
Acceptance	.09	1.34	.27
Pretreatment				0.32 (0.87; −1.43 to 2.07)	0.37	.72
Posttreatment				1.36 (0.88; −0.41 to 3.13)	1.54	.13
CBGT vs MBSR				−0.17 (0.16; −0.49 to 0.14)	1.10	.28
CBGT vs MBSR × posttreatment				1.11 (0.88; −0.66 to 2.87)	1.26	.21

^aUnstandardized β weight.