Table 1.

Participants’ demographic and clinical characteristics.

	Healthy controls	Patients with schizophrenia
Sex, n	9M/7F	9M/7F
Secondary education, n	7	7
Tertiary education, n	9	9
Age, yearsa	40.3 ± 9.3 (36, 45)	39.7 ± 8.6 (35, 44)
Age of illness onset, yearsa	–	23.2 ± 4.7 (21, 26)
Duration of illness, yearsa	–	13.3 ± 5.8 (10, 16)
Verbal IQa	105.6 ± 11.6 (100, 111)	89.8 ± 11.5 (84, 95)
PANSS total scorea	–	49.7 ± 7.2 (46, 53)
PANSS positive subscalea	–	14 ± 3.7 (12, 16)
PANSS negative subscalea	–	10.6 ± 3.4 (9, 12)
Chlorpromazine equivalent, mga	–	265.5 ± 168.9 (183, 348)

M, male; F, female; PANSS, Positive and Negative Syndrome Scale; IQ, intelligence quotient.

The 95% confidence intervals are given in brackets.

^aData are presented as mean ± SD.