Department of Dietetics, Faculty of Human Nutrition and Consumer Sciences, Warsaw University of Life Sciences (WULS-SGGW), 159c Nowoursynowska Street, 02-776 Warsaw, Poland.
Department of Organization and Consumption Economics, Faculty of Human Nutrition and Consumer Sciences, Warsaw University of Life Sciences (WULS-SGGW), 159c Nowoursynowska Street, 02-776 Warsaw, Poland.
Int J Environ Res Public Health. 2017 Dec 14;14(12):1574. doi: 10.3390/ijerph14121574.
The tools enabling brief assessment of folate intake may be of great value for public health purposes. The aim of the presented study was to design a brief folate-specific food frequency questionnaire for Central and Eastern European population of women, as well as to assess the validity and reproducibility of the designed Folate-Intake Calculation-Food Frequency Questionnaire (Fol-IC-FFQ) on a group of Polish women aged 20-30 years. Participants collected 3-day dietary records and completed the Fol-IC-FFQ twice (FFQ1: directly after the dietary record; and FFQ2: six weeks later). The analysis included an assessment of validity (comparison of the results of FFQ1 and 3-day dietary record) and of reproducibility (comparison of the results of FFQ1 and FFQ2). In assessment of validity, a Bland-Altman index of 5.3% was observed. In assessment of reproducibility, a Bland-Altman index of 2.7% was observed, the share of individuals classified into the same intake adequacy category was over 85%, the share of individuals classified into the same tertile was almost 75%, the weighted κ statistic indicated substantial agreement (0.67) and correlation was significant ( = 0.0000; = 0.7995). Assessment of the Fol-IC-FFQ revealed a satisfactory level of validity and very good level of reproducibility in the population of young Polish women. The Fol-IC-FFQ may be considered a valid tool for the assessment of folate intake in young Polish women and a promising tool for the assessment of folate intake in young women in Central and Eastern Europe.
用于简要评估叶酸摄入量的工具对于公共卫生目的可能具有重要价值。本研究的目的是为中欧和东欧的女性人群设计一种简短的叶酸特异性食物频率问卷，并评估该问卷在 20-30 岁波兰女性中的有效性和可重复性。参与者收集了 3 天的饮食记录，并两次完成 Fol-IC-FFQ（FFQ1：直接在饮食记录后；FFQ2：六周后）。分析包括有效性评估（FFQ1 和 3 天饮食记录结果的比较）和可重复性评估（FFQ1 和 FFQ2 结果的比较）。在有效性评估中，观察到 Bland-Altman 指数为 5.3%。在可重复性评估中，观察到 Bland-Altman 指数为 2.7%，超过 85%的个体被分类为相同的摄入量适宜类别，几乎 75%的个体被分类为相同的三分位组，加权 κ 统计量表明存在高度一致性（0.67），相关性显著（=0.0000；=0.7995）。评估 Fol-IC-FFQ 表明，在年轻的波兰女性人群中，该问卷具有令人满意的有效性和非常好的可重复性。Fol-IC-FFQ 可被视为评估年轻波兰女性叶酸摄入量的有效工具，也是评估中欧和东欧年轻女性叶酸摄入量的有前途的工具。
