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Table 2 The severity of depressive disorders among ED-I group and rDD group

From: Oxidant/antioxidant imbalance is an inherent feature of depression

Variable ED-I ( N  = 42) rDD ( N  = 89) Mann–Whitney U test
M (SD) M (SD) Z p
HDRS-I 22.73 (6.51) 24.06 (6.59) −0.622 0.534
HDRS-II 5.62 (3.76) 6.86 (4.01) −1.53 0.126
Number of depression episodes - 6.48 (5.81) - -
  1. ED-I – first episode of depression, rDD-recurrent depressive disorders, HDRS-I – Hamilton Depression Rating Scale at the onset of therapy, HDRS-II – Hamilton Depression Rating Scale after pharmacological treatment, M – mean, SD – standard deviation.