Characteristics of study participants by quintiles of dietary rice, bread, and noodle intake as well as dietary glycemic index and glycemic load (<i>N</i> = 1,848).

<p>GI: glycemic index, GL: glycemic load, METs/week: metabolic equivalent hours per week; Q: quintile.</p>a<p>The <i>χ</i>² test was used to analyze categorical variables, and linear regression analysis was used to calculate <i>p</i>-values for trends for continuous variables.