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Table 6 Mean cortical thickness and effect size within regions of interest in bipolar subcategories vs psychosis group

From: Cortical thinning in young psychosis and bipolar patients correlate with common neurocognitive deficits

  Mean thickness (mm) Effect size ( d)
BP1 BP2 BSD PSY PSY-BP1 PSY-BP2 PSY-BSD
Left hemisphere        
Intraparietal sulcus 2.01 2.09 2.05 2.04 0.14 −0.22 −0.05
Angular gyrus (pos.) 2.77 2.78 2.74 2.96 0.55 0.52 0.56
Angular gyrus (ant.) 2.61 2.64 2.51 2.50 −0.34 −0.34 −0.04
Calcarine sulcus 1.89 1.83 1.82 1.88 −0.02 0.21 0.30
Right hemisphere        
Superior temporal gyrus 2.89 2.83 2.79 2.91 0.08 0.28 0.46
Supramarginal gyrus 2.57 2.61 2.70 2.58 0.04 −0.09 −0.44
Precuneus 2.46 2.58 2.58 2.53 0.26 −0.16 −0.15
Precentral gyrus 2.33 2.38 2.36 2.31 −0.04 −0.23 −0.17
Fusiform 3.53 3.59 3.57 3.45 −0.18 −0.33 −0.27
Parieto-occipical sulcus 2.84 2.97 2.96 2.91 0.14 −0.15 −0.10
  1. Age-adjusted mean cortical thicknesses for ROIs were obtained from FreeSurfer, and Cohen's d examined the difference between people with bipolar I (n = 40), bipolar II (n = 29) or bipolar spectrum disorder (n = 23) and the psychosis group (n = 40). Items of small- (d>0.2) or medium-effect size (d>0.5) are italicized. ant., anterior; BP1, bipolar I disorder; BP2, bipolar II disorder; BSD, bipolar spectrum disorder; pos., posterior; PSY, psychosis group.