Table 1.

Age and total brain volume (TBV)

Matched sample (n = 48)Extreme sample (n = 48)
Men (n = 24)Women (n = 24)Men (n = 24)Women (n = 24)
Age42.96 ± 12.3143.88 ± 14.7439.33 ± 14.7945.75 ± 13.64
TBV1406.57 ± 101.691406.62 ± 101.411623.74 ± 68.941221.58 ± 62.99
  • Age (mean ± SD) is shown in years; TBV (mean ± standard deviation) is shown in milliliters. Matched men and matched women do not differ with respect to TBV. Extreme men consist of men with the largest TBVs; extreme women consist of women with the smallest TBVs.