Computerized cognitive remediation therapy on cognitive impairment and social function in patients with chronic schizophrenia

Table 3 Comparison of Wisconsin Card Sorting Test scores before and after treatment between the two groups of patients (mean ± SD, n = 60)

Times	Groups	RE	RPE	RA	CC
Pre-treatment	Intervention group	62.38 ± 1.76	37.28 ± 1.26	103.60 ± 1.76	3.33 ± 0.89
	Control groups	62.85 ± 3.63	37.48 ± 1.20	103.35 ± 1.88	3.28 ± 0.80
2 wk of treatment	Intervention group	53.23 ± 2.06a	25.07 ± 2.39a	90.20 ± 4.28a	4.03 ± 0.84a
	Control groups	56.73 ± 3.68	32.62 ± 4.39	97.65 ± 5.43	3.97 ± 0.89
4 wk of treatment	Intervention group	47.04 ± 1.66a	18.21 ± 3.19a	82.46 ± 3.53a	5.86 ± 2.07a
	Control groups	54.35 ± 1.20	29.47 ± 2.82	95.88 ± 2.34	4.78 ± 2.76
6 wk of treatment	Intervention group	39.92 ± 2.29a	10.50 ± 3.68a	75.89 ± 1.58a	7.42 ± 2.24a
	Control groups	52.24 ± 3.71	25.41 ± 1.36	91.92 ± 4.39	6.23 ± 1.72

^aP < 0.05, compared with pretreatment.

RE: Errors responses; RPE: Perseverative responses errors; RA: Responses answer; CC: Categories completed; WCST: Wisconsin card sorting test.