Table 2.

Pre- and post-assessment scores of secondary outcome measures.

Measure	Pre M (SD)	Post M (SD)	t(32)	p	Cohen’s d
Perceived Stress Scale
PSS, subscale coping	7.61 (2.85)	6.42 (2.73)	2.516	p  = 0.017	0.43
PSS, subscale distress	18.09 (4.69)	15.79 (4.82)	3.350	p  = 0.002	0.48
MAAS	3.65 (0.74)	3.63 (0.79)	0.180	p = 0.858	0.03
Hospital Anxiety and Depression Scale
HADS, subscale anxiety	10.58 (4.24)	9.18 (4.34)	2.300	p  = 0.028	0.33
HADS, subscale depression	8.36 (4.44)	7.03 (4.40)	2.432	p  = 0.021	0.30
AAQ—autism	24.85 (7.80)	23.64 (8.50)	0.971	p = 0.339	0.18
SWLS	14.79 (5.95)	15.79 (6.03)	−1.450	p = 0.157	0.17

M: mean value; SD: standard deviation; PSS: Perceived Stress Scale; MAAS: Mindful Attention Awareness Scale; HADS: Hospital Anxiety and Depression Scale; AAQ: Acceptance and Action Questionnaire modified to assess acceptance of autism diagnosis; SWLS: Satisfaction With Life Scale.

N = 33 with data at both pre- and post-intervention; p-values in bold indicate the statistical significance (p < 0.05).