Table 1. Mean ± standard deviation of demographic characteristics of participants.

	Matching 1				Matching 2
	Patients (n = 20)	Matched Control (n = 20)	T/χ2	P	Control 1 (n = 20)	Control 2 (n = 20)	T/χ2	P
Age (years)	38.15±10.19	35.60±14.74	.64a	.53	23.70±4.94	24.65±5.65	−0.57a	.57
Sex (Male/Female), n	13/7	7/13	2.5b	.11	8/12	10/10	.10b	.75
Education (years)	10.55±2.21	11.45±2.06	−1.33a	.19	15.20±1.79	15.90±2.02	−1.16a	.25
Premorbid IQ (f-NART)	103±8.12	107±9.03	−1.41a	.17	110±8.70	106±7.04	1.50a	.14
PANSS Positive	13.75±3.65
PANSS Negative	21.05±6.01
PANSS Psychopathology	36.20±8.34
PANSS Total	71.00±14.80

PANSS: positive and negative syndrome scale; IQ: Intellectual Quotient; f-NART: French version of the National Adult Reading Test.

^aIndependent-samples T-test.

^bChi-square test.