Table 2.

Clinical phenotype of subjects by quartile of NAA distribution^*.

	Plasma NAA distribution
	Bottom 25%	Upper 75%	p
NAA (nmol/L)	129 [41]	260 [66]	<0.0001
Women (%)	61	48	0.0138
Age (years)	48 ± 11	56 ± 11	<0.0001
BMI (kg/m2)	34.2 ± 9.3	32.5 ± 6.6	0.07
HbA1c (%)	8.2 ± 2.1	7.7 ± 1.6	0.0366
FPG (mg/dL)	158 ± 69	146 ± 53	0.09

^*entries are mean ± SD or median [interquartile range]; BMI, body mass index; FPG, fasting plasma glucose; NAA, N-acetylaspartate.