Table 2. Means (standard deviations), t-values, effect sizes, and % improvement of BIT and waitlisted hoarding participants.

Measure	Pre	Post	t (df)	p	Cohen's d	%
SI-R Total
TX	62.94 (10.73)	43.30 (20.34)	4.06 (17)	.01	1.97	31%
WL	57.58 (11.28)	58.90 (10.82)	-0.87 (19)	NS	0.40	-02%
SI-R Clutter
TX	24.44 (5.62)	17.93 (11.60)	3.02 (17)	.01	1.45	27%
WL	26.33 (4.86)	26.81 (5.34)	-0.70 (19)	NS	0.16	-02%
SI-R Discarding
TX	20.72 (3.37)	13.87 (5.67)	4.26 (17)	.01	2.07	33%
WL	18.15 (3.78)	18.74 (3.56)	-0.63 (19)	NS	0.14	-03%
SI-R Acquiring
TX	17.78 (5.24)	11.50 (5.26)	4.20 (17)	.01	2.04	35%
WL	13.10 (6.66)	13.35 (5.93)	-0.41 (19)	NS	0.09	-02%
HRS
TX	22.50 (5.50)	15.83 (7.94)	5.04 (17)	.01	2.45	30%
WL	21.60 (4.71)	23.45 (4.56)	-1.82 (19)	NS	-0.83	-09%
CIR Assessor
TX	3.62 (1.60)	2.94 (1.66)	3.94 (17)	.01	1.91	19%
WL	3.43 (0.97)	3.29 (0.94)	1.29 (19)	NS	0.59	04%
CIR Client
TX	3.65 (1.38)	3.06 (1.58)	3.80 (17)	.01	1.84	16%
WL	3.66 (1.23)	3.78 (1.42)	-0.61 (19)	NS	0.59	-03%
ADL Total
TX	1.83 (0.71)	1.29 (0.29)	3.71 (17)	.01	1.80	30%
WL	1.74 (0.43)	1.70 (0.51)	0.55 (19)	NS	0.25	02%
SCI Total
TX	105.13 (25.18	) 73.33 (32.49)	4.27 (17)	.01	2.07	30%
WL	105.82 (23.44	) 99.93 (28.08)	1.46 (19)	NS	0.67	06%
SCI Responsibility
TX	25.50 (6.59)	17.17 (7.79)	4.03 (17)	.01	1.96	33%
WL	25.16 (8.32)	25.29 (8.16)	-0.09 (19)	NS	-0.04	-01%
SCI Memory
TX	23.61 (5.76)	14.39 (8.32)	4.40 (17)	.01	2.13	39%
WL	22.50 (7.13)	23.60 (6.71)	-0.86 (19)	NS	-0.40	-05%
SCI Emotional Attach
TX	40.13 (15.62)	27.72 (13.87)	3.52 (17)	.01	1.71	31%
WL	42.23 (13.07)	36.14 (13.37)	3.20 (19)	.01	1.47	14%
SCI Control
TX	15.89 (4.74)	14.06 (5.75)	2.00 (17)	.07	0.97	12%
WL	15.92 (4.76)	14.90 (5.43)	1.05 (19)	NS	0.48	06%

ADL, Activities of Daily Living; CIR, Clutter Image Rating; HRS, Hoarding Rating Scale; SCI, Saving Cognitions Inventory; SI-R, Saving Inventory-Revised