. Author manuscript; available in PMC: 2019 Jun 12.

Published in final edited form as: Anal Chem. 2006 Apr 1;78(7):2199–2208. doi: 10.1021/ac0517085

Table 4.

Selected Biomarkers as Predictors of Population Samples Derived from the Loadings of the PC-LDA Model (n = 852)

metabolite	Hierarchy^a (highest to lowest across the 3 samples)
β-aminoisobutyric acid	Gx only
creatinine	C > AT > Gx
creatine	Gx > C > AT
glucose	AT > C > Gx
hippurate	C > AT > Gx
histidine/methylhistidine	C > Gx = AT
methylated polyols	Gx only
N-methylnicotinic acid/N-methylnicotinamide	C > Gx = AT
taurine	AT > C > Gx
trimethylamine-N-oxide	AT > C > Gx
ethanol	Gx^b > AT > C
ethyl glycoside	Gx^b > AT > C

Key: C, Chicago; Gx, Guangxi; AT, Aito Town.

High concentrations of urinary ethanol are a feature of male Guangxi participants but not of female participants from this population sample.