In a recent study, Starleaf, Meyers, and Womack (S-M-W, 1985) analyzed the behavior of annual time series data in the United States on various farm and nonfarm price indices over the 1929-1983 period and three subperiods in order to examine the proposition that changes in the general rate of...

The authors have developed a method for estimating the distribution of an unobservable random variable from data that are subject to considerable measurement error and that arise from a mixture of two populations, one having a single-valued distribution and the other having a continuous unimodal...

Current concerns over links between diet and health, the safety of food, and developing effective nutrition education and food assistance programs have placed increasing demands on federal data collection and methods of monitoring the food supply. Design of effective food and nutrition policies,...

The importance of measurement error for parameter estimation and for the design of statistical studies, particularly sample surveys, is examined. Beginning with a brief review of Hansen's contributions, the discussion concentrates on estimation problems in which measurement error leads to bias...

Data obtained from dietary intake surveys are often used to estimate the proportion of the population with insufficient (or excessive) intake of certain dietary components. The authors present a two-step method for obtaining smooth estimates of day-to-day correlations for nutrient intake, and...

Rations of usual intakes of dietary components, such as the percent of calories from fat, are important indicators of dietary adequacy. The authors of this paper discuss the problem of estimating the intake distribution of ratios of dietary components by using an extension of the method...

C-SIDE implements the method for estimating usual intake distributions either for dietary components consumed daily or for components consumed less frequently. This manual is divided into four parts: an introduction listing equipment and data requirements; a description of the use of the...

The distribution of usual intakes of dietary components is important to individuals formulating food policy and to persons designing nutrition education programs. Usual intake of a dietary component for a person is the long run average of daily intakes of that component for that person. Because...

The U.S. Department of Agriculture (USDA) has been responsible for conducting periodic surveys to estimate food consumption patterns of households and/or individuals in the United States for over 50 years. Data from these surveys have had a significant impact on the formulation of...

The parameters of the distribution of usual intakes of calcium, energy, iron, protein and vitamin C are estimated using four daily intakes of these dietary components for a sample of women selected in the Continuing Survey of Food Intakes by Individuals, conducted in 1985-86 by the Human...