Table 2.

Change in outcomes between time 1 (pretreatment) and time 2 (posttreatment/post-waitlist)

		Intervention ( n  = 11)	Waitlist ( n  = 7)
Outcome	Time	Mean (SD)	Mean (SD)	p-value*	d**
DASS-D	1	10.09 (3.73)	10.71 (5.41)	.011	1.12
	2	7.64 (2.77)	11.00 (5.20)
DASS-A	1	9.64 (2.01)	8.57 (4.61)	.025	.89
	2	6.73 (2.90)	8.14 (4.85)
DASS-S	1	10.64 (3.26)	10.00 (4.28)	.828	.08
	2	8.82 (1.83)	8.43 (4.50)
PDQ-39	1	36.03 (12.62)	28.48 (16.15)	.095	.56
	2	32.82 (12.95)	32.88 (14.50)
CCL-D	1	31.22 (15.50)	24.49 (14.12)	.009	1.26
	2	18.02 (15.94)	28.83 (9.86)
CCL-A	1	32.01 (10.51)	29.46 (14.00)	.009	.92
	2	23.67 (11.27)	33.04 (15.38)

DASS-D = DASS-Depression, DASS-A = DASS-Anxiety, DASS-S = DASS-Stress, PDQ-39 = Parkinson’s Disease Questionnaire-39, CCL-D = Cognitions Checklist-Depressive Cognitions, CCL-A = Cognitions Checklist-Anxious Cognitions.

*p-value for Time x Condition interaction effect $\frac{M_{\mathit{T\Delta }}-M_{\mathit{C\Delta }}}{S{D}_{\mathit{\text{pooled}}}}$.

**Cohen’s d as computed by.