Table 1: Baseline socio-demographic and clinical characteristics of the patients enrolled in the study.

All Data: no. (%) or Mean (SD) Median Group A
n = 20
Group B
n = 20
Statistics
Sex
Males
Females

18 (90%)
2 (10%)

20 (100%)
0 (0%)

Chi-Square = 0.52, df = 1, p = .46
Age 41.5 (8.3) 41 35.5 (9.0) 31 t = 2.18, df = 38, p = .03
Education
Compulsory school
High school
University Degree or higher

17 (85%)
2 (10%)
1 (5%)

16 (80%)
4 (20%)
0 (0%)

Chi-Square = 1.69, df = 2, p = .43
Civil status
Unmarried
Divorced

19 (95%)
1 (5%)

20 (100%)
0 (0%)

Chi-Square = 0.00, df = 1, p = 1.00
Living condition
Living alone
Living with others

4 (20%)
16 (80%)

4 (20%)
16 (80%)

Chi-Square = 0.00, df = 1, p = 1.00
Occupational status
Employed
Unemployed
Disability pension

1 (5%)
7 (35%)
12 (60%)

0 (0%)
4 (20%)
16 (80%)

Chi-Square = 2.39, df = 2, p = .30
Diagnosis
Schizophrenia spectrum psychoses
Affective psychoses
Personality disorders

14 (70%)
4 (20%)
2 (10%)

9 (45%)
7 (35%)
4 (20%)

Chi-Square = 2.57, df = 2, p = .27
WHO-QoL physical area 12.9 (2.2) 13 12.4 (2.1) 13 t = .77, df = 38, p = .44
WHO-QoL social area 11.9 (2.5) 12 12.6 (2.4) 13 t = – .95, df = 38, p = .34
WHO-QoL psychological area 11.8 (1.5) 11 12.7 (1.9) 12 t = – 1.75, df = 38, p = .08
WHO-QoL environmental area 12.6 (2.4) 12 11.8 (2.3) 11 t = .96, df = 38, p = .34

Group A refers to the group that participated in the dolphin-finding expeditions during the first year of the study; Group B refers to the group that participated in the dolphin-finding expeditions during the second year of the study, and served as a control group for Group A.