Table 2.

Descriptive statistics for bulk volume analysis

Descriptive Statistics by Karyotype GroupOmnibus test for group differences
Karyotype (n)XX (87)XY (79)XXX (28)XXY (56)XYY (25)XXYY (19)XXXXY (5)F statistic−log(p)
Total brain volume, cm320.9319.67
    Mean1261139211791287141812911131
    SEM9.7413.822.817.824.929.736.1
Amygdala, cm323.7822.15
    Mean2.322.542.052.262.432.191.86
    SEM0.020.030.040.030.060.050.06
Hippocampus, cm39.648.95
    Mean4.304.573.984.324.684.333.82
    SEM0.040.050.070.070.120.120.13