Fig. 2From: Association of serum glycine levels with metabolic syndrome in an elderly Chinese populationComparison of the circulating Gly concentrations median (interquartile range) according to MetS and its components. MetS and its components were defined based on the 2006 IDF standard. The Mann-Whitney U rank-sum test was used to estimate the difference between two groups. *p < 0.05, **p < 0.01, ***p < 0.001Back to article page