Table 3.

Effect Sizes of Improvements from Pre-Treatment to Post-Treatment, 3 Months Follow-up, 6 Months Follow-up, and 12 Months Follow-up

	Post 7 days	3 mos. - FU	6 mos. - FU	12 mos. - FU
WSAS	—	1.61	1.49	1.26
GAD-7	1.19	1.43	1.29	1.20
PHQ-9	1.46	1.49	1.27	1.19
PSWQ	0.60	1.01	1.03	0.88
CFQ	0.98	1.54	1.47	0.95
BIS	0.64	0.94	0.75	0.81
BIPQ	3.02	3.67	3.66	2.81

Note WSAS = Work and social adjustment scale; GAD-7 = General anxiety disorder;

PHQ-9 = Patient health questionnaire; PSWQ = Penn State worry questionnaire;

CFQ = Chalder fatigue Scale; BIPQ = Brief illness perception questionnaire; FU = Follow-up.

Effect sizes computed as Glass’s Δ =