Table 3.

Key metabolite concentrations normalized to creatine in the anterior cingulate cortex (mean ± standard error; institutional units).

	Male-SB+	Male-SB−	Female-SB+	Female-SB−	p value (SB+ vs. SB−)	p value (males SB+ vs. males SB−)	p value (females SB+ vs. females SB−)
NAA/Cr + PCr	1.34 ± 0.02	1.36 ± 0.04	1.41 ± 0.03	1.40 ± 0.07	0.79	0.76	0.92
GABA/Cr + PCr	0.18 ± 0.01	0.17 ± 0.007	0.15 ± 0.01	0.2 ± 0.02	0.9	0.44	0.04*
Gln/Cr + PCr	0.26 ± 0.01	0.27 ± 0.03	0.22 ± 0.02	0.25 ± 0.006	0.35	0.49	0.37
Glu/Cr + PCr	1.12 ± 0.02	1.12 ± 0.03	1.15 ± 0.03	1.12 ± 0.12	0.99	0.86	0.73

Note: NAA: N-acetylaspartate; Cr + PCr: creatine + phosphocreatine; GABA: gamma amino butyric acid; Gln: glutamine; Glu: glutamate; SB: suicidal behavior.

^*Indicates significance (t test).