TABLE 1.

Demographic, cognitive and performance characteristics of the study sample.^a

Characteristic	FESZ①		UHR②		HC③		Comparison		Post hoc p-values
	N	%	N	%	N	%	χ2/F	p	① vs. ②	① vs. ③	② vs. ③
Gender(female/male)	20/15	57.1/42.9	15/15	50/50	13/27	32.5/67.5	4.879	0.087
	Mean	SD	Mean	SD	Mean	SD
Age(years)	25.09	6.44	22.67	5.38	25.45	2.90	2.947	0.057	0.167	1.000	0.072
Education(years)	12.74	3.08	13.37	3.12	14.38	3.14	2.626	0.077	1.000	0.077	0.550
Cognition(subsampleb)
Speed of processing	33.28	9.22	36.96	7.21	41.68	6.38	6.228	0.003	0.326	0.002	0.167
Attention/vigilance	31.91	10.63	39.53	9.04	47.79	8.80	14.164	0.000	0.049	0.000	0.039
Verbal learning	39.12	9.83	42.74	10.08	46.58	9.34	3.151	0.050	0.615	0.044	0.630
Working memory	37.24	10.01	40.70	9.35	44.84	8.07	3.631	0.032	0.605	0.027	0.462
Visual learning	40.96	13.77	44.04	10.22	43.89	10.07	0.517	0.599	1.000	1.000	1.000
Reasoning/problem solving	34.32	11.87	37.74	9.21	40.37	10.16	1.823	0.170	0.797	0.191	1.000
Social cognition	30.80	11.79	38.55	7.90	37.00	11.06	3.626	0.033	0.040	0.188	1.000
Overall composite	35.22	7.08	39.83	6.02	42.88	6.40	6.912	0.002	0.089	0.002	0.527
P50 measure
S1 amplitude(μV)	1.24	0.58	1.13	0.73	1.30	0.90	1.212	0.546	0.533	0.731	0.924
S2 amplitude(μV)	0.99	0.61	0.67	0.43	0.74	0.56	7.081	0.029	0.019	0.025	0.772
S1-S2(μV)	0.25	0.54	0.41	0.79	0.55	0.82	1.397	0.497	0.824	0.464	0.860
S2/S1	0.87	0.50	0.78	0.68	0.65	0.43	5.157	0.076	0.282	0.068	0.836

^aNumber and percentage of subjects are shown for gender, analyzed by chi squared test. Group means and standard deviations (SD) are reported for age, years of education and the MATRICS Consensus Cognitive Battery, analyzed by ANOVA. ^bThe subsample, who participated in the assessment of cognitive performance by MCCB, including 25 FESZ patients (12 males and 13 females), 23 UHR individuals (11 males and 12 females), and 19 HC (11 males and 8 females), obtained from the total sample. P-values of less than 0.05 in the table are marked with bold.