Rohan T E, Potter J D
Am J Epidemiol. 1984 Dec;120(6):876-87. doi: 10.1093/oxfordjournals.aje.a113959.
In studying the role of diet in chronic disease etiology, measurement of past intake may be of more relevance than measurement of that existing either at the time of or just preceding the clinical onset of disease. In 1983, in metropolitan Adelaide, South Australia, estimates of current and previous dietary intake were obtained, by use of a semiquantitative food frequency questionnaire, from 70 individuals (37 male, 33 female), from each of whom an estimate of intake, using the same questionnaire, had been obtained three years earlier. Over this three-year period, median nutrient and energy intake had declined. In relative, if not absolute terms, individuals were able to make satisfactory retrospective estimates of original nutrient and energy intake; however, their retrospective estimates appeared to have been influenced by their current intakes. Nevertheless, the strong correlations observed between retrospective and original estimates of intake suggest that the semiquantitative food frequency method of retrospective dietary assessment allows a reliable relative ranking of individuals by nutrient intake within a population.
在研究饮食在慢性病病因学中的作用时，测量过去的摄入量可能比测量疾病临床发病时或发病前不久的现有摄入量更具相关性。1983年，在南澳大利亚州阿德莱德市，通过使用半定量食物频率问卷，从70个人（37名男性，33名女性）那里获得了当前和以前饮食摄入量的估计值，三年前曾使用相同问卷从每个人那里获得过摄入量估计值。在这三年期间，营养素和能量摄入量的中位数有所下降。相对而言，即使不是绝对的，个体能够对原来的营养素和能量摄入量做出令人满意的回顾性估计；然而，他们的回顾性估计似乎受到了当前摄入量的影响。尽管如此，回顾性摄入量估计值与原始估计值之间观察到的强相关性表明，回顾性饮食评估的半定量食物频率方法能够在人群中按营养素摄入量对个体进行可靠的相对排名。
