Table 2.

One-way ANOVA demonstrating significant differences in change in symptom severity between intervention and control group for three out of four subscales of the CoSS.

	Mean (SD) Intervention group	Mean (SD) Control group	F	Sig (p)	η2 (partial)	Effect size (Cohen’s f)
Delta_AV (t1-t2)	1,53 (SD = 7,689)	−1,47 (SD = 6,583)	3,701	0,058	0,043	0,21
Delta_AS (t1-t2)	2,91 (SD = 8,570)	−1,85 (SD = 9,437)	5,942	0,017	0,067	0,27
Delta_WD (t1-t2)	3,87 (SD = 7,269)	−0,93 (SD = 8,100)	8,263	0,005	0,091	0,32
Delta_AO (t1-t2)	3,62 (SD = 5,553)	−0,75 (SD = 6,845)	10,552	0,002	0,113	0,36

SD, standard deviation; F, F-value; p-value, probability value; η2 (partial), partial eta-squared; t1 = first outpatient presentation, t2 = post-treatment (intervention group) or 3–4 weeks later without having received psychotherapy (control group), Effect size = ${\mathrm{Cohen}}^{\prime }\mathrm{s}\mathrm{f}=\surd \left({\eta }^2/\left(1-{\eta }^2\right)\right)$ . Compass of Shame subscales: AV, avoidance, AS, attack self, WD, withdrawal, AO, attack others. Negative delta values describe an increase in the severity of shame-related symptoms.