Intervention (n = 20)

Treatment as usual (n = 17)

Linear regression

Variable

Baseline

12 weeks

Change

Baseline

12 weeks

Change

B

95% CI

p

Sex (female), n (%)

12 (60.0)

5 (29.4)

0.20

Age, M (SD)

44.3 (13.6)

39.3 (12.1)

0.25

Diagnoses, n (%)

0.11

Psychotic spectrum disorder

11(55.0)

12 (70.6)

Mood disorder

7 (35)

2 (11.8)

Autism spectrum disorder

2 (11.8)

PTSD

2 (10)

Personality disorder

1 (5.9)

Medication use, n (%)

Antipsychotics

14 (70.0)

15 (88.2)

0.18

Antidepressants

8 (40.0)

7 (41.2)

0.94

Benzodiazepines

4 (20.0)

6 (35.3)

0.30

Mood stabilizers

8 (40.0)

1 (5.9)

0.02

Non

2 (10.0)

1 (5.9)

0.65

BSI, M

Sum score

1.73

1.72

−0.01

1.89

1.95

0.06

−0.24

−0.65/0.16

0.23

Psychoticism

1.75

1.68

−0.07

1.94

2.12

0.18

−0.54

−1.12/0.04

0.07

Paranoid thoughts

1.81

1.78

−0.03

1.91

2.09

0.19

−0.39

−1.01/0.23

0.21

WHOQOL-BREF, M

Domain I Physical health

11.81

13.26

1.22

12.63

12.24

-0.07

1.96

0.17/3.74

0.03

Domain II Psychological

12.04

12.91

0.98

12.26

11.89

-0.37

1.34

−0.02/2.69

0.05

Domain III Social relationships

12.98

13.12

0.08

11.89

11.89

0.00

0.11

−2.03/2.25

0.92

Domain IV Environment

15.29

15.43

0.04

15.00

14.50

-0.17

0.64

−0.47/1.75

0.25