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. 2021 May 11;11:9992. doi: 10.1038/s41598-021-89335-9

Figure 2.

Figure 2

Correlations between quinolinic acid and composite cognitive score in patients with schizophrenia (SZ) and major depressive disorder (MDD). Significant negative correlations between quinolinic acid and composite cognitive score in patients with (A) SZ but not (B) MDD. Higher cognitive scores indicate better cognitive performance. aWithout correcting for covariates, bAfter correction for the covariates age, sex, BMI, smoking, disease severity (i.e. illness onset and duration), medication (chlorpromazine equivalents, imipramine equivalents, lorazepam medication) and total years of education. The level of significance was set at p < 0.05 (significant p-values are indicated in bold).