Development and Validation of an Internet-Based Food Frequency Questionnaire to assess the Diets of a Large Chinese Population

建立应用于中国大人群营养素评价的网上膳食调查问卷并验证其有效性

Ren-Nan Feng ； Shan-Shan Du ； Yang Chen ； Zhen Li ； Ying-Feng Zhang ； Chang-Hao Sun ； Yong-Shuai Jiang

《Asia Pacific Journal of Clinical Nutrition》 預刊文章 Pp. 16-30

https://doi.org/10.6133/apjcn.092015.26

摘要

在中国进行全国性膳食调查紧迫且难以实行。本研究的目的是建立一个适用于中国人的网上膳食调查问卷（IDQC）并在北方人群中验证其有效性。通过电子邮件和电话招募292名哈尔滨居民，完成IDQC和3天膳食日记。通过与3天膳食日记中的数据比较，来验证IDQC中食物组和营养素的准确性。应用配对样本t检验，比较两种调查方法中食物组和营养素的平均水平，重复性应用皮尔森相关系数进行分析。将两种调查方法中的食物组和营养素摄入量四等分后，应用交叉分组计算问卷一致率。校正总能量摄入后，所有食物组在IDQC和3天膳食日志间均呈正相关（变化范围从种子和坚果类的0.28到奶制品的0.63）。所有营养素在IDQC和3天膳食日志间仍然呈明显正相关，相关系数由叶酸的0.37到碘元素的0.98.食物组和营养素的一致率均在69.2%以上，表明IDQC和3天膳食日志间有令人的满意的一致性。综上所述，在中国北方，IDQC能够用于临床实践和未来的膳食调查中进行食物和营养素摄入量估计。问卷调查系统IDQC（v1.0）见：http://www.yyjy365.org/diet/。

關鍵字

验证 ； 网络 ； 食物频率问卷 ； 营养素 ； 中国

並列摘要

National dietary surveys are needed and difficult to conduct in China. The current study aims to develop and validate an internet-based diet questionnaire for Chinese (IDQC) to assess intakes in Northern China. We recruited 292 city residents by email and telephone in Harbin to obtain the IDQC and 3-day diet diaries. The food group and nutrient intakes from the IDQC were validated against those from the 3-day diet diaries. Paired sample t-tests were used to compare the methodological differences, and repeatability was estimated using Pearson's correlations. Cross-classification was used to calculate the percentage agreement in quartiles for all food groups and nutrients. Positive correlations were found between the IDQC and 3-day diet diaries for all food groups after energy adjustment (from 0.28 for seeds and nuts to 0.63 for dairy products). Positive correlations were observed for all nutrients between the IDQC and 3-day diet diaries, with correlations ranging from 0.37 for folic acid to 0.98 for iodine. The overall agreements for food groups and nutrients were above 69.2%, indicating satisfactory consistency between the IDQC and 3-day diet diaries. Thus, the IDQC can be used to estimate the food and nutrient intakes in a Northern China population for both clinical nutrition epidemiological and public health nutritional purposes. The questionnaire system IDQC (v1.0) is freely available at http://www.yyjy365.org/diet/.

並列關鍵字

IDQC internet ； food frequency questionnaire ； nutrients ； China