Fig. 4: Correlation of Pretreatment Metabolites Concentrations and Percent Difference in Hamilton Depression Rating Scale.

Percent difference in Hamilton Depression Rating Scale with treatment versus pretreatment GABA (A), Glx (a combination of glutamate and glutamine) (B) or Glx/GABA (C). Treatment type is indicated by color. Positive y-values indicate a reduction in symptoms. (R: correlation coefficient; p: p-value). SSRI selective serotonin reuptake inhibitor (escitalopram).