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. Author manuscript; available in PMC: 2017 Jul 27.
Published in final edited form as: Neurobiol Aging. 2014 Jul 29;36(1):53–59. doi: 10.1016/j.neurobiolaging.2014.07.030

Table 2.

Metabolite levels

Group p-value
HCS (N = 21) MCI (N = 15)
Mean SD Mean SD
Metabolite levels
  GABA (AU) 1.71 0.50 1.37 0.37 0.034
  Glx (AU) 16.27 2.67 14.27 1.58 0.014
  NAA (AU) 7.80 0.91 7.18 0.81 0.045

Group comparisons were performed by t test statistics.

GABA, Glx, and NAA levels were corrected for CSF, WM, and atrophy. Significant p-values are indicated in bold letters (p < 0.05).

Key: AU, arbitrary units; CSF, cerebrospinal fluid; GABA, γ-aminobutyric acid; Glx, glutamate + glutamine; HCS, healthy control subjects; MCI, mild cognitive impairment; NAA, N-acetyl-aspartate; SD, standard deviation; WM, white matter.