Improving Clinical, Cognitive, and Psychosocial Dysfunctions in Patients with Schizophrenia: A Neurofeedback Randomized Control Trial

Table 3

Correlations between the magnitude of changes from pretherapy to posttherapy measurements in the group of patients following a standard rehabilitation program (group R).

Variable	Group R (standard rehabilitation program)
	PANSS-POS	PANSS-NEG	PANSS-GEN	PANSS-TOT	BDNF (ng/ml)	QEEG theta/beta	QEEG theta/SMR	N1 amplitude	P2 latency
PANSS-POS	—	0.315	0.588	0.712	−0.211	0.034	0.078	0.193	−0.405
PANSS-NEG	0.315	—	0.568	0.799	−0.343	0.388	0.399	−0.028	−0.100
PANSS-GEN	0.588	0.568	—	0.880	−0.085	0.038	0.042	0.272	−0.030
PANSS-TOT	0.712	0.799	0.880	—	−0.221	0.147	0.168	0.192	−0.174
BDNF (ng/ml)	−0.211	−0.343	−0.085	−0.221	—	0.101	0.140	0.433	−0.117
QEEG theta/beta	0.034	0.388	0.038	0.147	0.101	—	0.904	0.007	−0.498
QEEG theta/SMR	0.078	0.399	0.042	0.168	0.14	0.904	—	0.181	−0.488
N1 (amplitude)	0.193	−0.028	0.272	0.192	0.433	0.007	0.181	—	−0.555
P2 (latency)	−0.405	−0.100	−0.030	−0.174	−0.117	−0.498	−0.488	−0.555	—

Correlations were assessed using Spearman’s rank correlation coefficients (italics) and Pearson’s ; statistically significant correlations () are marked with an asterisk ().