Table 4.

Spearman correlations (rho) of PANSS score and concentration of THMs in schizophrenia patients.

EMEs	PANSS Score (Positive)	PANSS Score (Negative)	PANSS Score (General)	PANSS Score (Total)
Cr	−0.04	0.158	−0.117	−0.035
Cd	−0.008	0.030	0.011	0.068
Pb	0.150	0.288 **	0.006	0.324 **
As	0.103	−0.085	−0.017	0.012

* p < 0.05. ** p < 0.01. PANSS: The Positive and Negative Syndrome Scale.