Differences between plasma betaine quintiles.

<p>Median data in subsets of study population based on quintiles of gender-adjusted plasma (pl) betaine concentrations from Q1 (lowest quintile) to Q5 (highest quintile), with significance (<i>p</i>) for difference between quintiles (Kruskal-Wallis one way analysis of variance on ranks). Significant (<i>p</i><0.05) differences between quintiles marked in bold. “With diabetes” row shows percentage of subjects in each plasma betaine quintile who had diabetes.