Validity of the 24-hr. recall. Analysis of data obtained from elderly subjects.
Validity of the 24-hr. recall. Analysis of data obtained from elderly subjects.
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24 小时有效期。
DOI：
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发表时间：
1976
影响因子：
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通讯作者：
H. Guthrie
中科院分区：
文献类型：
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作者：
J. P. Madden;S. J. Goodman;H. Guthrie
24小时饮食回忆的有效性测试是通过比较实际与回忆的八种营养素的摄入量和MAR（平均充足率）进行的，样本为76名60岁或以上的受试者。效度检验采用配对t检验和回归分析。在配对t检验中，除卡路里外，平均回忆和平均实际营养摄入量之间没有显着差异。使用回归分析，结果表明，对于所考虑的八种营养素中的三种（卡路里，蛋白质和维生素A），小摄入量往往被过度报告，而大摄入量则被低估（p <0.05）。因此，对于这三种营养素，回忆对于组间比较来说似乎是统计上保守的;它很少（如果有的话）表明不存在差异的摄入量存在差异。但是，它可能会产生假阴性，即，没有显著差异的指示，而实际上存在差异。显然，需要进行更多的研究，既要复制这项研究，又要开发出具有更大内部有效性的技术来比较各组的饮食摄入量。
Tests of the validity of the 24-hr. dietary recall were done by comparing actual with recalled intakes for eight nutrients and the MAR (mean adequacy ratio) for a sample of seventy-six subjects age sixty years or older. Validity was tested by using paired-t tests and regression analysis. In the paired-t test, no significant difference was found between the mean recalled and the mean actual intake of nutrients, with the exception of calories. Using regression analysis, results indicated that for three of the eight nutrients considered (calories, protein, and vitamin A), small intakes tend to be over-reported and large intakes under-reported (p less than .05). Thus, for these three nutrients, the recall seems to be statistically conservative for group comparisons; it would seldom, if ever, indicate a difference in intake where no difference exists. But, it could yield a false negative, i.e., an indication of no significant difference, when, in fact, a difference does exist. Clearly, more research is needed, both to replicate this study and to develop techniques with greater internal validity for comparing the dietary intakes of groups.