Fig. 5
Results of Spearman correlation analyses. a + b: Association of compliance (number of attended sessions) with delta Quinolinic acid to kynurenic acid ratios (QUINA/KYNA ratios, t1 - t0). a: only number of third sessions attended) and delta QUINA/KYNA ratios, b number of all attended sessions and delta QUINA/KYNA ratios. a rs = − 0.443, p = 0.039, b rs= -0.400, p = 0.065. Of note, the correlation between compliance (no. of 3rd sessions) and delta QUINA/KYNA ratios was not significant after correcting for type 1 errors (p = 0.039 > 0.005