Table 3.

Descriptive statistics for outcome variables evaluating psychological symptoms, quality of life, and psychological resources.

Variable	T1				T2				Statistics
	Intervention group		Wait-list control group		Intervention group		Wait-list control group
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	t	p
PSYCHOLOGICAL SYMPTOMS AND QUALITY OF LIFE
BDI-II	5.96	4.19	6.22	5.50	4.63	4.37	6.69	5.49		ns
STAI-S	31.19	7.42	32.06	9.12	30.33	10.04	34.00	12.35		ns
STAI-T	38.85	7.56	38.97	10.87	33.85	7.24	37.47	9.63	t(25) =4.11b	< 0.001
LSAS-SR - Total	38.27	19.72	41.44	25.15	31.12	22.05	39.91	24.97		ns
SCL-27-PLUS
Social phobia	1.30	0.75	1.68	0.93	0.90	0.74	1.48	0.86		ns
Vegetative	1.07	0.55	1.23	0.56	0.76	0.55	1.04	0.50		ns
Pain	1.43	0.71	1.61	0.66	0.88	0.57	1.34	0.69	t(58) =−2.77a	0.008
Agoraphobic	0.45	0.53	0.61	0.51	0.39	0.52	0.48	0.50		ns
Current depression	0.52	0.47	0.62	0.61	0.50	0.75	0.71	0.61		ns
OQ45.2 - Total	41.08	20.60	45.35	23.82	32.65	15.40	42.39	23.71		ns
SD	21.96	11.27	25.55	13.63	16.27	8.19	22.97	14.08		ns
IR	10.00	6.70	9.61	6.80	7.61	5.49	9.97	6.14	t(25) =2.47b	0.021
SR	8.50	4.00	9.30	5.11	8.19	4.27	8.52	4.87		ns
WHOQOL-Bref - Global	17.15	1.97	17.19	2.59	17.62	2.40	17.25	2.68		ns
PHYS	16.56	1.89	16.09	2.52	17.12	1.97	16.54	2.50		ns
PSYCH	14.62	2.24	14.48	2.42	15.46	1.77	14.31	2.32	t(55) =2.05a	0.045
SOCIAL	15.36	2.83	16.17	2.93	16.33	2.73	15.74	3.41		ns
ENVIR	16.83	2.03	16.34	2.32	17.37	1.20	16.74	2.29		ns
PSYCHOLOGICAL RESOURCES
SOC - Total	65.89	9.95	66.28	12.44	71.04	8.04	67.09	11.70	t(25) =−0.48b	0.002
SCS-SF - Total	3.09	0.51	3.09	0.85	3.49	0.59	3.16	0.98	t(24) =−0.61b	0.001
GSES	31.40	6.05	31.78	7.35	34.72	3.37	33.25	5.05		ns
MSPSS	6.05	0.83	6.04	0.94	6.21	0.68	5.82	1.31		ns

Mean (SD) value at pre- (T1) and post-treatment (T2) by treatment condition (intervention group vs. wait-list control group) in the PP-sample (n = between 56 and 60)

SD, Standard Deviation; BDI-II, Beck Depression Inventory-II; STAI-S and STAI-T, Spielberger State-Trait Anxiety Inventory; LSAS-SR, Liebowitz Social Anxiety Scale; SCL-27-plus, Symptom Checklist; OQ45.2, The Outcome Questionnaire 45.2; SD, Symptom Distress; IR, Interpersonal Relationships; SR, Social Role; WHOQOL-Bref, World Health Organization Quality of Life-Bref; PHYS, Physical; PSYCH, Psychological; SOC, Social; ENVIR, Environmental; SOC, Sense of Coherence Scale; SCS-SF, Self-compassion Scale Short Form; GSES, General Self-Efficacy Scale; MSPSS, Muldimensional Scale of Perceived Social Support.

^aPost-hoc independent t-test

^bPost-hoc paired t-test

^*p < 0.05.