One of a series of sixteen knowledge transformation papers, this paper examines the advantages and disadvantages of longitudinal studies as a method for evaluating vocational programs. First, longitudinal methods are defined for the differences between them and cross-sectional studies are established. The results of a literature search conducted…

This report presents data on dietary intake obtained to assess the nutritional status of the United States population, aged 1-74 years. Age, sex, race, and income level differences in dietary intake are among the variables considered. Data are analyzed for certain groups at high risk of malnutrition (e.g., the poor, preschool children, women of…

Presented are the results of a survey of over 100,000 manufacturing establishments, conducted for the National Science Foundation by the Bureau of Labor Statistics, covering average annual employment for calendar year 1977. Industries whose relative concentration of scientists and engineers was high in 1977, such as petroleum refining, chemicals,…

This document focuses on spending for national research and development. Data were compiled from information on research and development (R&D) activities collected through individual sector surveys conducted as part of a comprehensive program to measure and analyze the nation's resources for research and development. Data are reported about…

Data from a survey of Illinois residents are used in this report to determine the extent and distribution of crime in the State. Specific areas addressed include: (1) the extent of two types of crime, violent crime and property crime, and which is the more predominant; (2) whether crime in Illinois is an urban or rural problem: (3) social…