Table 4.

Correlations between the magnitudes of changes from pretherapy to posttherapy measurements in the group of patients participating in a combined NF/standard rehabilitation program (group NF).

Variable	Group NF (combined NF/standard rehabilitation)
	PANSS-POS	PANSS-NEG	PANSS-GEN	PANSS-TOT	BDNF (ng/ml)	QEEG theta/beta	QEEG theta/SMR	N1 amplitude	P2 latency
PANSS-POS	—	0.737 ∗	0.851 ∗	0.877 ∗	−0.770∗	0.171	0.274	−0.106	0.074
PANSS-NEG	0.737 ∗	—	0.846 ∗	0.920 ∗	−0.857∗	0.004	0.018	−0.228	−0.061
PANSS-GEN	0.851 ∗	0.846 ∗	—	0.956 ∗	−0.804∗	0.112	0.169	−0.103	0.172
PANSS-TOT	0.877 ∗	0.920 ∗	0.956 ∗	—	−0.832∗	0.149	0.209	−0.166	0.061
BDNF (ng/ml)	−0.770∗	−0.857∗	−0.804∗	−0.832∗	—	0.123	0.057	0.153	0.296
QEEG theta/beta	0.171	0.004	0.112	0.149	0.123	—	0.875∗	−0.161	−0.127
QEEG theta/SMR	0.274	0.018	0.169	0.209	0.057	0.875∗	—	−0.298	−0.297
N1 (amplitude)	−0.106	−0.228	−0.103	−0.166	0.153	−0.161	−0.298	—	0.035
P2 (latency)	0.074	−0.061	0.172	0.061	0.296	−0.127	−0.297	0.035	—

Correlations were assessed using Spearman's rank correlation coefficients (italics) and Pearson's r; statistically significant correlations (P < 0.050) are marked with an asterisk (∗).