Table 2.

Means and standard deviations (untransformed) of outcome measures at each time point

	Pretreatment M (SD) (N = 81)	Posttreatment M(SD) (N = 63)	6 month FU M (SD) (N = 55)
Primary Outcome
GAD CSR
ABBT	5.53 (0.55)	3.03 (1.38)	2.88 (1.59)
AR	5.44 (0.71)	2.70 (1.57)	2.77 (1.59)
SIGH-A
ABBT	19.31 (6.55)	10.98 (7.06)	9.54 (7.53)
AR	20.54 (6.79)	11.48 (6.20)	10.75 (6.93)
PSWQ
ABBT	67.67 (8.10)	51.03 (8.46)	50.37 (11.34)
AR	70.41 (6.22)	52.28 (10.69)	52.27 (10.57)
DASS-Stress
ABBT	24.49 (8.73)	13.37 (6.44)	12.84 (7.68)
AR	24.58 (7.64)	12.00 (8.43)	11.53 (7.75)
STAI
ABBT	53.94 (9.81)	43.46 (10.39)	42.88 (10.94)
AR	53.30 (7.87)	43.48 (12.07)	40.72 (10.44)
Secondary Outcome
BDI-II
ABBT	19.33 (11.10)	9.54 (10.76)	8.93 (11.91)
AR	17.92 (10.60)	7.85 (8.51)	7.47 (8.73)
QOLI
ABBT	0.24 (2.14)	1.56 (1.78)	1.41 (1.80)
AR	0.86 (1.18)	1.87 (1.60)	1.92 (1.41)
Number of Additional Diagnoses
ABBT	0.95 (0.98)	0.55 (0.92)	0.48 (0.92)
AR	1.15 (0.85)	0.52 (0.71)	0.37 (0.56)
Process Measures
Treatment Credibility
ABBT	29.00 (5.12)	--	--
AR	28.84 (4.89)	--	--
WAI – client
ABBT	70.52 (10.44)	--	--
AR	73.15 (7.41)	--	--
WAI - therapist
ABBT	64.31 (8.13)	--	--
AR	66.14 (7.36)	--	--
To what extent do you feel that this treatment was a good match for you?
ABBT	--	7.39 (1.41)	--
AR	--	7.41 (1.66)	--

Note. ABBT = acceptance-based behavior therapy; AR = applied relaxation; FU = follow-up; CSR = clinician severity rating; SIGH-A; structured interview guide for the Hamilton Anxiety Rating Scale; PSWQ = Penn State Worry Questionnaire; DASS = Depression, Anxiety, Stress scale; STAI = State-Trait Anxiety Inventory; BDI-II = Beck Depression Inventory – II; QOLI = Quality of Life Inventory; WAI = Working Alliance Inventory.