Department of Epidemiological Methods and Etiologic Research, Bremen Institute for Prevention Research and Social Medicine, University of Bremen, Germany.
Int J Obes (Lond). 2011 Apr;35 Suppl 1:S61-8. doi: 10.1038/ijo.2011.36.
To investigate the reproducibility of food consumption frequencies derived from the food frequency section of the Children's Eating Habits Questionnaire (CEHQ-FFQ) that was developed and used in the IDEFICS (Identification and prevention of dietary- and lifestyle-induced health effects in children and infants) project to assess food habits in 2- to 9-year-old European children.
From a subsample of 258 children who participated in the IDEFICS baseline examination, parental questionnaires of the CEHQ were collected twice to assess reproducibility of questionnaire results from 0 to 354 days after the first examination. Weighted Cohen's kappa coefficients (κ) and Spearman's correlation coefficients (r) were calculated to assess agreement between the first and second questionnaires for each food item of the CEHQ-FFQ. Stratification was performed for sex, age group, geographical region and length of period between the first and second administrations. Fisher's Z transformation was applied to test correlation coefficients for significant differences between strata.
For all food items analysed, weighted Cohen's kappa coefficients (κ) and Spearman's correlation coefficients (r) were significant and positive (P<0.001). Reproducibility was lowest for diet soft drinks (κ=0.23, r=0.32) and highest for sweetened milk (κ=0.68, r=0.76). Correlation coefficients were comparable to those of previous studies on FFQ reproducibility in children and adults. Stratification did not reveal systematic differences in reproducibility by sex and age group. Spearman's correlation coefficients differed significantly between northern and southern European countries for 10 food items. In nine of them, the lower respective coefficient was still high enough to conclude acceptable reproducibility. As expected, longer time (>128 days) between the first and second administrations resulted in a generally lower, yet still acceptable, reproducibility.
Results indicate that the CEHQ-FFQ gives reproducible estimates of the consumption frequency of 43 food items from 14 food groups in European children.
研究儿童饮食习惯问卷（CEHQ-FFQ）的食物频率部分得出的食物消费频率在多大程度上具有可重复性，该问卷是为评估欧洲 2 至 9 岁儿童的饮食习惯而开发并用于 IDEFICS（儿童和婴儿饮食和生活方式诱导的健康影响的识别和预防）项目的。
从参加 IDEFICS 基线检查的 258 名儿童的子样本中，两次收集了 CEHQ 的家长问卷，以评估首次检查后 0 至 354 天内问卷结果的可重复性。为每个 CEHQ-FFQ 的食物项目计算加权 Cohen's kappa 系数（κ）和 Spearman 相关系数（r），以评估首次和第二次问卷之间的一致性。按性别、年龄组、地理位置和首次和第二次管理之间的时间长度进行分层。Fisher Z 变换用于检验分层之间相关系数的显著性差异。
对于所有分析的食物项目，加权 Cohen's kappa 系数（κ）和 Spearman 相关系数（r）均显著且为正（P<0.001）。软饮料（κ=0.23，r=0.32）的可重复性最低，加糖牛奶（κ=0.68，r=0.76）的可重复性最高。相关系数与先前在儿童和成人中进行的 FFQ 可重复性研究相似。按性别和年龄组分层并没有显示出可重复性的系统差异。10 种食物的北部和南部欧洲国家之间的 Spearman 相关系数存在显著差异。在其中 9 种情况下，较低的相关系数仍然足够高，可以得出可接受的可重复性结论。正如预期的那样，首次和第二次管理之间的时间（>128 天）越长，可重复性通常越低，但仍然可以接受。
结果表明，CEHQ-FFQ 可对欧洲儿童 14 种食物组的 43 种食物的消费频率进行可重复的估计。
