Normal Metabolic Levels in Prefrontal Cortex in Euthymic Bipolar I Patients with and without Suicide Attempts

Table 2

Medial orbital prefrontal cortex metabolic levels between bipolar patients with and without suicide attempt and healthy controls (mmol/l ± SD).

Metabolic levels	BD I patients		HC	Statistics
	Suicidal; = 17; mean (SD)	Nonsuicidal; = 19; mean (SD)	= 16; mean (SD)
NAA	2.79 ± 0.58	2.95 ± 0.58	3.12 ± 0.54	,
Myo-inositol	0.88 ± 0.42	0.97 ± 0.42	0.93 ± 0.41	,
Choline	1.32 ± 0.37	1.36 ± 0.42	1.27 ± 0.31	,
Creatine	1.53 ± 0.39	1.70 ± 0.53	1.63 ± 0.43	,
NAA/creatine	1.86 ± 0.36	1.85 ± 0.39	1.93 ± 0.51	,
Choline/creatine	0.86 ± 0.17	0.81 ± 0.14	0.78 ± 0.11	,
Myo-inositol/creatine	0.61 ± 0.31	0.63 ± 0.35	0.59 ± 0.27	,
Choline	2.79 ± 0.58	2.95 ± 0.58	3.12 ± 0.54	,
Creatine	0.88 ± 0.42	0.97 ± 0.42	0.93 ± 0.41	,

Significant at the 0.05 level (2-tailed).
Degrees of freedom = 1.
NAA: N-acetyl-aspartate.
HC: Healthy controls.