Department of Clinical Sciences, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain.
Br J Nutr. 2009 Dec;102 Suppl 1:S10-37. doi: 10.1017/S0007114509993126.
The EURRECA Network of Excellence is working towards the development of aligned micronutrient recommendations across Europe. The purpose of the present study was to define how to identify dietary intake validation studies in adults pertaining to vitamins. After establishing a search strategy, we conducted a MEDLINE and EMBASE literature review. A scoring system was developed to rate the quality of each validation study according to sample size, statistical methods, data collection procedure, seasonality and vitamin supplement use. This produced a quality index with possible scores obtained ranging from 0.5 to 7. Five thousand four-hundred and seventy-six papers were identified. The numbers meeting the inclusion criteria were: for vitamin A, 76; vitamin C, 108; vitamin D, 21; vitamin E, 75; folic acid, 47; vitamin B12, 19; vitamin B6, 21; thiamine, 49; riboflavin, 49; and niacin, 32. The most frequently used method to ascertain dietary intake was the Food Frequency Questionnaire (FFQ), whereas dietary records (DR) and 24-h recalls were the most used reference methods. The correlation coefficients (CC) between vitamin intakes estimated by FFQ and the reference method were weighted according to the study's quality index and ranged from 0.41 to 0.53 when the reference method was the DR and from 0.43 to 0.67 when the reference was 24-h recalls. A minority of studies (n 33) used biomarkers for validation and in these the CC ranged from 0.26 to 0.38. The FFQ is an acceptable method of assessing vitamin intake. The present review provides new insights regarding the characteristics that assessment methods for dietary intake should fulfil.
EURRECA 卓越网络正在努力制定全欧洲统一的微量营养素建议。本研究的目的是确定如何识别成人维生素饮食摄入验证研究。在建立搜索策略后，我们进行了 MEDLINE 和 EMBASE 文献综述。开发了一种评分系统，根据样本量、统计方法、数据收集程序、季节性和维生素补充剂使用情况对每项验证研究的质量进行评分。这产生了一个质量指数，可能的得分范围为 0.5 至 7。确定了 5476 篇论文。符合纳入标准的数量为：维生素 A 76 篇，维生素 C 108 篇，维生素 D 21 篇，维生素 E 75 篇，叶酸 47 篇，维生素 B12 19 篇，维生素 B6 21 篇，硫胺素 49 篇，核黄素 49 篇，烟酸 32 篇。最常用的确定饮食摄入量的方法是食物频率问卷 (FFQ)，而饮食记录 (DR) 和 24 小时回忆是最常用的参考方法。根据研究的质量指数对 FFQ 估计的维生素摄入量与参考方法之间的相关系数 (CC) 进行加权，当参考方法为 DR 时，CC 范围为 0.41 至 0.53，当参考方法为 24 小时回忆时，CC 范围为 0.43 至 0.67。少数研究 (n = 33) 使用生物标志物进行验证，在这些研究中，CC 范围为 0.26 至 0.38。FFQ 是评估维生素摄入量的一种可接受方法。本综述提供了有关饮食摄入评估方法应满足的特征的新见解。
