Correlation coefficients between purine metabolites and clinical assessments from first-episode neuroleptic-naive patients with schizophrenia at baseline before antipsychotic treatment.

*Pearson correlation coefficient was calculated following transformation of the data (except MC) to natural logarithm.†Kendall's tau rank correlation coefficient was measured when those data determined not normally distributed.‡Significance with p = 0.001 in boldface after the Bonferroni correction.Abbreviations: G, guanine; Gr, guanosine; Xant, xanthosine; Xan, xanthine; UA, uric acid; GAS, Global Assessment Scale; BPRS, Brief Psychiatric Rating Scale; PSS, Positive Symptoms Scale; SANS, Scale for Assessment of Negative Symptoms; TD, Thought disorder; SI, Sensory Integration; MC, Motor Coordination; RM, Repetitive Motion; SCMA, Sequencing Complex Motor Acts.