Table 1 Demographic characteristics of the participants. Median and range [minimum-Maximum] for non-parametric tests; Education: years of education; NSS: Neurological soft sign scale; TMT: Trail Making test; PANSS: positive and negative syndrome scale.

Age (years)

29 [21–45]

28 [19–46]

U = 218^a

0.58

Sex (male/female)

17/5

15/7

X² = 0.11^b

0.73

Education (years)

12 [9–17]

12 [9–17]

U = 240^a

0.97

TMT-A (seconds)

28.5 [17–57]

21 [15–38]

U = 110^a

0.002

TMT-B (seconds)

75.5 [35–150]

47 [32–180]

U = 125^a

0.006

TMT-(B-A) (seconds)

42.5 [15–116]

26 [12–156]

U = 148^a

0.028

NSS

19.2 [6–38.5]

16.3 [1.5–22.3]

U = 125^a

0.006

PANSS Positive

9.5 [7–18]

PANSS Negative

10 [7–22]

PANSS Psychopathology

22 [17–35]

PANSS Total

43 [31–66]