Comparison of the density of gamma-aminobutyric acid in the ventromedial prefrontal cortex of patients with first-episode psychosis and healthy controls

. 2015 Dec 25;27(6):341–347. doi: 10.11919/j.issn.1002-0829.215130

Table 1. Comparison of the demographic characteristics and the density of brain metabolites in the ventromedial prefrontal cortex of 22 individuals with first-episode psychosis and 23 healthy controls

characteristic	first-episode psychosis group	control group	statistic	p-value
mean (sd) age	26.1 (5.8)	25.5 (4.4)	t=0.40	0.690
female, n (%)	13 (59.1%)	13 (56.5%)	X² =0.03	0.862
mean (sd) years of education	13.7 (2.4)	13.9 (2.2)	t=-0.21	0.327
mean (sd) concentration of γ-aminobutyric acid (GABA), mM	2.28 (0.54)	1.93 (0.32)	t=2.62	0.012
mean (sd) concentration of N-acetylaspartic acid (NAA), mM	4.22 (0.80)	4.45 (0.81)	t=-0.99	0.329
mean (sd) concentration of glutamic acid (GLU), mM	2.78 (1.40)	2.29 (1.06)	t=1.30	0.200
mean (sd) concentration of glutamine (GLN), mM	4.07 (2.60)	3.71 (1.36)	t=0.59	0.444