highly significantp < 0.001
For the left DLPFC ( R 2 = 0.705), SCD remained a highly significant negative predictor ( p < 0.001), while the addition of RI provided no significant independent contribution ( p = 0.886).
For the left DLPFC ( R 2 = 0.705), SCD remained a highly significant negative predictor ( p < 0.001), while the addition of RI provided no significant independent contribution ( p = 0.886).
Regarding ethnic differences, analysis in the in-house dataset showed that the E-field ratio followed the same hierarchical pattern as in the primary analysis (Han Chinese > White); however, the difference did not reach statistical significance for either the mean (all p > 0.05) or the 95th percentile (all p > 0.05) (see online suppl.