The Distribution of Food Consumption over a Year: A Longitudinal Analysis
使用1985年美国农业部收集的六波纵向数据，分析19-50岁女性一年内的食品消费决策，通过多变量方法揭示食品组消费模式，并计算方差比以辅助膳食研究。
Abstract Longitudinal methods are used to examine food consumption decisions by American women aged 19–50. The data set used is the 1985 Continuing Survey of Food Intake by Individuals collected by the U.S. Department of Agriculture, which is a six‐wave longitudinal data set gathered over the course of a year. The multivariate results give insights into how individuals make food group consumption decisions. In addition, the use of longitudinal data allows calculation of variance ratios that have proven to be useful in dietary research. Simulations are run to highlight the effects of important explanatory variables.