Kerr G R, Lee E S, Lam M K, Lorimor R J, Randall E, Forthofer R N, Davis M A, Magnetti S M
Am J Clin Nutr. 1982 Feb;35(2):294-307. doi: 10.1093/ajcn/35.2.294.
Data from the first National Health and Nutrition Examination Survey were examined for individual 24-h dietary intakes of protein, vitamin A, thiamin, riboflavin, and iron, and for laboratory indices of the same nutrients in blood and urine. Mean intake values were close to or above reference standards for all nutrients except iron. Substandard laboratory values were recorded for: serum albumin and vitamin A--less than 3% of subjects; urinary thiamin/creatinine excretion--3 and 8% of white and Black subjects, respectively; Hb, hematocrit, and percentage transferrin saturation--5 to 15% of whites and 18 to 27% of Black subjects; serum iron--less than 6% of subjects. Individual dietary recall data were of limited value in predicting the laboratory indices; regression analyses indicated that sociodemographic variables may be of greater predictive value.
对首次全国健康与营养检查调查的数据进行了分析，内容涉及个体24小时蛋白质、维生素A、硫胺素、核黄素和铁的膳食摄入量，以及血液和尿液中相同营养素的实验室指标。除铁外，所有营养素的平均摄入量均接近或高于参考标准。记录到的低于标准的实验室指标有：血清白蛋白和维生素A——不到3%的受试者；尿硫胺素/肌酐排泄量——白人受试者和黑人受试者分别为3%和8%；血红蛋白、血细胞比容和转铁蛋白饱和度百分比——白人受试者为5%至15%，黑人受试者为18%至27%；血清铁——不到6%的受试者。个体膳食回忆数据在预测实验室指标方面价值有限；回归分析表明，社会人口统计学变量可能具有更大的预测价值。
