In order for health program evaluation to keep up with the evolution of disease patterns and epidemiology, a systems approach is proposed. Recommendations are made for the essential element in such an approach, namely, an integrated, comprehensive data base. (Author/AL)

Twenty-nine steps necessary for data file preparation for secondary analysis are discussed. Data base characteristics and planned use vary the complexity of the preparation. Required techniques (file verification, sample verification, file merger, data aggregation, file modification, and variable controls) and seven associated pitfalls are defined…

A detailed examination of the Higher Education General Information Survey (HEGIS) data base--its content, development, and past and potential uses for researchers--is presented. Because knowledge of the data elements is crucial for successful secondary analysis, procedures for collecting needed information on the data in HEGIS are suggested. (BS)

Large-scale databases are an underutilized source of data for secondary analysis by researchers. Major government and private databases available to the public, the types of agencies developing them, and how to obtain and utilize them are described. A catalogue of 20 databases, their characteristics and sources is included. (BS)

This case study describes how path analysis and causal modeling were used to assess the impact of federal research and development spending on Ph.D production in science and engineering at leading research universities. The nature of existing data, integrated into a single data base from seven surveys, influenced the research methodology. (BS)