highly significantP = 0.0051
There is significant negative correlation between PSA and vitamin E ( r = −0.3890, P = 0.0131) ( Figure 3 ), but there is highly significant negative correlation between PSA and glutathione peroxidase and superoxide dismutase ( r = −0.4346, P = 0.0051; and r = −0.5367, P = 0.0004, resp.) (Figures 1 and 2 ).