Table 4.

Random effects using linear mixed models.

Cov Parm	Estimate	SE	Z value	p value
Site for TD vs. NTD vs HC	0.00309	0.000248	12.49	<0.0001
Site for TD vs HC	0.00387	0.000381	10.17	<0.0001
Site for NTD vs HC	0.00375	0.000369	10.17	<0.0001
Site for TD + NTD vs HC	0.00310	0.000248	12.49	<0.0001
Site for TD vs NTD	0.00166	0.000162	10.25	<0.0001

Abbreviations: TD = schizophrenia patients with tardive dyskinesia (TD), NTD = schizophrenia patients without TD, HC = healthy controls, Cov Parm = Covariance Parameter, SE = Standard Error, Z value and p value are based on the Z test for the random effect in the linear mixed models.