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Abstract：
Little is known regarding Korean preschooler dietary phytochemical index (DPIs). We used the 24 h recall data of 1196 participants aged 3-5 years from the Korea National Health and Nutrition Examination Survey to study the association between dietary food intake and obesity prevalence. The amount of dietary intake by food group was compared according to sex and DPI quartile. Multivariable-adjusted odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using logistic regression models. The average total DPI and energy from phytochemical food groups were not significantly different according to sex, although boys had a higher total daily food intake. Different inclinations between DPI quartiles and amount of intake were observed in the food groups; specifically, beans showed a higher intake difference between Q1 and Q4 for boys than in the other food groups. The highest DPI quartile had a significantly lower obesity prevalence than the lowest DPI quartile in all models for boys only when obesity prevalence by weight percentile was analyzed (Model 3, OR: 0.287, 95% CI: 0.095-0.868, p for trend < 0.05). Our results suggest a high DPI could help prevent obesity in preschoolers.
摘要：
关于韩国学龄前儿童膳食植物化学指数（DPI）知之甚少。我们使用韩国国家健康和营养调查的1196名3-5岁参与者的24小时回忆数据来研究膳食食物摄入量与肥胖患病率之间的关系。根据性别和DPI四分位数比较了食物组的饮食摄入量。使用逻辑回归模型计算多变量调整后的比值比（OR）和95％置信区间（CI）。植物化学食物组的平均总DPI和能量根据性别没有显着差异，尽管男孩每天的总食物摄入量较高。在食物组中观察到DPI四分位数和摄入量之间的不同倾向；特别是，男孩在Q1和Q4之间的豆类摄入量差异高于其他食物组。在所有男孩模型中，只有当按体重百分位数分析肥胖患病率时，最高DPI四分位数的肥胖患病率明显低于最低DPI四分位数（模型3，OR：0.287，95％CI：0.095-0.868，p趋势<0.05）。我们的结果表明，高DPI可以帮助预防学龄前儿童的肥胖。
