Differences between the cerebral cortex and white matter 1 (DCW) values among the groups. The DCW values on the Y axis gradually decreased in accordance with worsening of neurological outcome. Box and whisker plots with median, lower and upper quartiles, and outliers are shown. C, Control. †P < 0.001 vs C and GOS 5 groups, **P < 0.01 vs C and GOS 5 groups, ††P < 0.001 vs GOS 1 group, *P < 0.001 vs GOS 2 group.