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L A Jordan

Publications and source records attributed to L A Jordan.

4 recordsLinked to original sources
PubMed1984

Sampling and data collection methods in the National Evaluation of School Nutrition Programs.

A nested sampling design is described in which school districts are selected, schools within those districts that cover grades one through 12 are selected, and finally students within each of the grades are selected. The article describes how nutritional status information is collected from each student, economic and food expenditure data are collected from the students' parents, and information on food services is collected from district and school administrators. Sample weighting and adjustments for nonresponse bias are discussed in the appendix.

Adolescent↗
PubMed1984

The National Evaluation of School Nutrition Programs: data analysis methods.

An overview of the analytic methods used in the National Evaluation of School Nutrition Programs is provided. A path model is described that shows the hypothesized relationships between outcome and predictor variables. The outcome variables are participation in the School Nutrition Programs and the effects of participation on family food expenditures and student dietary intake and anthropometric measurements. Individual student participation in the programs is seen as the last of a series of participation decisions that include the school's decision to offer the program and the prices charged for meals. Selection of specific statistical and structural models to present these relationships are discussed. The decision to use ordinary least square estimates of impact rather than a modified two-stage least squares approach is explained.

Anthropometry↗
PubMed1980

Monitoring health status, access to health care, and compliance behavior in a large urban community: a report from the Los Angeles health survey.

This article summarizes results from 2 health surveys conducted in Los Angeles County in 1974 and 1977. The original objective of this analysis was to identify aggregate changes in the health status of this population, in access as measured by the use/disability ratio, and in self-reported compliance with medical regimens. Additionally, we have suggested that this study illustrates the value of local population surveys for health policy--particularly in regard to recent Health Systems Agencies legislation. Substantial correspondence was found between the health status characteristics of both samples and national estimates, particularly for the prevalence of chronic illness. We also found a 3-year trend of increasing disability that is consisted with national data. However, unlike the national estimates, we found evidence of improved access relative to disability, and a corresponding reduction in the traditional income differential. Analysis of self-reported compliance showed little change over time, with Anglos and the middle and upper socioeconomic groups reporting less compliance with their doctors' recommendations.

Adolescent↗