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. Author manuscript; available in PMC: 2016 May 1.
Published in final edited form as: J Acquir Immune Defic Syndr. 2015 May 1;69(1):18–28. doi: 10.1097/QAI.0000000000000551

Figure 1. Inter-relationships between plasma metabolites and depression scores in HIV patients on ART.

Figure 1

Spearman correlation matrix visualization reveals inter-relationships between a set of 5 plasma metabolites and BDI scores in the HIV-positive test cohort (n=30). Comparisons were performed in a pair-wise manner and the correlation matrix was constructed in R. Diagonals display the histogram for each individual variable. Units displayed on the x-axis of the histogram represent depression scores (BDI) or metabolite concentrations (scaled intensities). Units on the y-axis represent numbers of subjects with values within the specified range for depression scale scores or metabolite concentrations. Panels to the right of the histogram show Spearman correlation coefficients and p-values. Red and blue represent positive and negative correlations, respectively.