Lee J, Kolonel L N, Hankin J H
Int J Epidemiol. 1985 Jun;14(2):249-53. doi: 10.1093/ije/14.2.249.
A number of dietary assessment methods have been developed for epidemiological investigations. The general tendency has been to strive for methods that are sufficiently simple to implement in a fairly large sample of respondents and yet are able to measure dietary intakes with an acceptable degree of reliability. Concomitantly, methodological studies are needed to determine whether the various methods can be used interchangeably. This study compares the unquantified and quantified food frequency interview methods for measuring cholesterol intake on 4638 subjects from a multi-ethnic population in Hawaii. The methods were only modestly related, with product-moment correlation of 0.36 for men and 0.30 for women. The unquantified frequency method tended to yield a higher cholesterol value than did the quantified frequency method among lower level consumers, whereas the opposite was true for higher level consumers. These findings suggest that unquantified frequency methods cannot be used interchangeably with corresponding quantified frequency methods in studies of association between dietary cholesterol and disease occurrence.
为进行流行病学调查，已开发出多种膳食评估方法。总体趋势是寻求足够简单的方法，以便在相当大的样本受访者中实施，同时能够以可接受的可靠程度测量膳食摄入量。与此同时，需要开展方法学研究，以确定各种方法是否可以互换使用。本研究比较了未量化和量化食物频率访谈法在测量夏威夷多民族人群4638名受试者胆固醇摄入量方面的差异。两种方法的相关性一般，男性的积差相关系数为0.36，女性为0.30。在低水平消费者中，未量化频率法得出的胆固醇值往往高于量化频率法，而在高水平消费者中则相反。这些发现表明，在膳食胆固醇与疾病发生之间的关联研究中，未量化频率法不能与相应的量化频率法互换使用。
