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

Table 2 Comparison of positive and negative syndrome scale scores before and after treatment between the two groups of patients (mean ± SD)

Times	Groups	General pathology	Positive symptom	Negative symptom	Totals
Pre-treatment	Intervention group (n = 60)	35.63 ± 2.03	17.77 ± 1.50	22.58 ± 1.95	68.65 ± 7.63
	Control groups (n = 60)	36.02 ± 1.31	17.63 ± 1.58	22.28 ± 1.33	66.25 ± 6.94
2 wk of treatment	Intervention group (n = 60)	26.22 ± 2.49a	11.85 ± 2.29 a	15.63 ± 1.59a	53.70 ± 3.46a
	Control groups (n = 60)	33.42 ± 3.34	15.12 ± 1.84	18.18 ± 3.65	64.72 ± 5.53
4 wk of treatment	Intervention group (n = 60)	20.39 ± 2.08a	10.35 ± 2.91a	10.13 ± 1.55a	48.65 ± 2.67a
	Control groups (n = 60)	30.28 ± 1.44	12.45 ± 3.08	17.31 ± 3.26	61.50 ± 2.17
6 wk of treatment	Intervention group (n = 60)	12.21 ± 5.72a	7.18 ± 6.48a	9.12 ± 1.79a	43.02 ± 7.62a
	Control groups (n = 60)	23.85 ± 5.67	10.90 ± 2.36	11.91 ± 2.09	56.95 ± 6.94

^aP < 0.05, compared with pretreatment.

PANSS: Positive and negative syndrome scale.