Conventional analyses of data from dietary validation studies may misestimate reporting accuracy: illustration from a study of the effect of interview modality on children's reporting accuracy

Public Health Nutrition

Michele D Nichols¹  James W Hardin¹  Suzanne Domel Baxter¹  Albert F Smith¹ 

关键词: Validation;    Relative validation;    Epidemiological methods;    Dietary assessment;   

DOI  :  10.1017/S136898000768714X

学科分类：卫生学

来源: Cambridge University Press

【 摘 要 】

ObjectiveTo compare two approaches to analysing energy- and nutrient-converted data from dietary validation (and relative validation) studies – conventional analyses, in which the accuracy of reported items is not ascertained, and reporting-error-sensitive analyses, in which reported items are classified as matches (items actually eaten) or intrusions (items not actually eaten), and reported amounts are classified as corresponding or overreported.DesignSubjects were observed eating school breakfast and lunch, and interviewed that evening about that day's intake. For conventional analyses, reference and reported information were converted to energy and macronutrients; then t-tests, correlation coefficients and report rates (reported/reference) were calculated. For reporting error-sensitive analyses, reported items were classified as matches or intrusions, reported amounts were classified as corresponding or overreported, and correspondence rates (corresponding amount/reference amount) and inflation ratios (overreported amount/reference amount) were calculated.SubjectsSixty-nine fourth-grade children (35 girls) from 10 elementary schools in Georgia (USA).ResultsFor energy and each macronutrient, conventional analyses found that reported amounts were significantly less than reference amounts (every P 

【 授权许可】

Unknown