A comparison of methods of assessment of dietary selenium intakes in Otago, New Zealand
A comparison of methods of assessment of dietary selenium intakes in Otago, New Zealand
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DOI：
10.1017/s0007114599001282
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发表时间：
1999-08-01
影响因子：
3.6
通讯作者：
Thomson, CD
中科院分区：
文献类型：
--
作者：
Duffield, AJ;Thomson, CD
本研究的目的是：（1）比较三种膳食硒摄入量的评估方法，即重复膳食的化学分析、膳食记录和专门设计的食物频率问卷（FFQ）;（2）确定新西兰奥塔哥居民的膳食硒摄入量。FFQ由110名自由生活的成年人完成。饮食记录（3天）和重复的饮食收集进行了43个这些主题的基础上选择的低血硒浓度，并在一段时间内，当消费的高硒食物鱼，肾，肝和巴西坚果被劝阻。平均硒摄入量相似的重复饮食分析（29（SD 13）μ g/d）和饮食记录评估（28（SD 15）μ g/d）。43名受试者亚组的FFQ摄入量估计值（51（SD 26）μ g/d）高于重复饮食和饮食记录。从重复的饮食分析和饮食记录评估的值有很强的相关性（r 0.7，P = 0.0001），但差异图表明两种方法之间缺乏一致性。因此，饮食记录评估是不足以预测膳食硒摄入量的个人。硒摄入量从重复饮食（微克/公斤体重每天）和血浆硒，硒摄入量从饮食记录（微克/天和微克/公斤体重每天）和血浆硒之间的关系显着相关性，和硒摄入量从FFQ和全血硒。重复膳食和膳食记录的硒摄入量与以前报告的新西兰人的硒摄入量相似，但低于美国（国家研究理事会，1989年）、澳大利亚（Truswell等人，1990年）和英国（卫生部，1991年）的推荐摄入量以及世界卫生组织/粮食及农业组织/国际原子能机构（1996年）的规范要求。
The aims of the present study were (1) to compare three methods of assessment of dietary Se intake, i.e. chemical analysis of duplicate diets, diet records and a food-frequency questionnaire (FFQ) designed specifically for Se, and (2) to determine dietary Se intakes of residents of Otago, New Zealand. The FFQ was completed by 110 free-living adults. Diet records (3 d) and duplicate diet collections were carried out by forty-three of these subjects chosen on the basis of low blood Se concentration, and during a period when consumption of the high-Se foods fish, kidney, liver and Brazil nuts was discouraged. Mean Se intakes were similar for duplicate diet analysis (29 (SD 13) mu g/d) and diet record assessments (28 (SD 15) mu g/d). Estimates of intakes from the FFQ for the subgroup of forty-three subjects were higher (51 (SD 26) mu g/d) than those from duplicate diets and diet records. Values from duplicate diet analysis and diet record assessments were strongly correlated (r 0.7, P = 0.0001), but difference plots indicated a lack of agreement between the two methods. Thus, diet record assessment was not adequate for predicting dietary Se intakes of individuals. Significant correlations were found for relationships between Se intake from duplicate diets (mu g/kg body weight per d) and plasma Se, Se intake from diet records (mu g/d and mu g/kg body weight per d) and plasma Se; and Se intake from the FFQ and whole-blood Se. Se intakes from duplicate diets and diet records were similar to those reported previously for New Zealanders, but lower than the recommended intakes in the USA (National Research Council, 1989), Australia (Truswell et al. 1990) and the UK (Department of Health, 1991) and the World Health Organization/Food and Agriculture Organization/International Atomic Energy Agency (1996) normative requirement.