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. Author manuscript; available in PMC: 2010 Oct 12.
Published in final edited form as: Mol Psychiatry. 2009 Apr 28;15(9):938–953. doi: 10.1038/mp.2009.33

Figure 5.

Figure 5

Significant correlations of 5-hydroxyindoleacetic acid (5HIAA) to tryptophan (Trp), melatonin (Mel), Kynurenine (Kyn) or 3-hydroxy-kynurenine (3OHKy) in normal control subjects, but not in FENNS patients at baseline and FENNS patients after 4-week treatment with antipsychotic drugs. The P values were calculated by Monte Carlo simulated probability of the statistic (good approximation for all sample sizes). FENNS, first-episode neuroleptic-naive schizophrenic; iqu, negative inverse quartic root; qurt, quartic root; ln, natural log.