Background: Stratified medicine seeks to identify patients most likely to respond to treatment. Individual participant data (IPD) network meta-analysis (NMA) models have greater power than individual trials to identify treatment-covariate interactions (TCIs). Treatment-covariate interactions contain "within" and "across" trial…

Agent-based modeling has become increasingly popular in recent years, but there is still no codified set of recommendations or practices for how to use these models within a program of empirical research. This article provides ideas and practical guidelines drawn from sociology, biology, computer science, epidemiology, and statistics. We first…

Missing data are a common occurrence in survey-based research studies in education, and the way missing values are handled can significantly affect the results of analyses based on such data. Despite known problems with performance of some missing data handling methods, such as mean imputation, many researchers in education continue to use those…

It is argued that research settings should be chosen with the whole experimental design in mind and that the availability of appropriate controls (groups or occasions for observation) should be as important as the suitability of the treatment group. (Author/AM)

Reports on a program held at the 1986 American Library Association Conference which offered a model for locating and evaluating existing research on libraries. Six guidelines for evaluating research are provided, and small group sessions which evaluated actual research and talked directly with researchers are described. (EM)

Thirty-three research articles based on t-tests, F-tests, or Pearson product-moment correlations selected from the "Journal of Medical Education" were examined for adequate research reporting. Nearly one-half did not report sufficient data or were found to have low power values. Guidelines for research reporting are discussed.…

Requirements of research projects intended to evaluate the cost-effectiveness of new or modified health-care-delivery arrangements are discussed. Included in the discussion are the peculiarities of evaluation research, issues that arise in the implementation of health-related programs and their evaluation, and the dissemination process. (JMD)

This handbook outlines procedures for evaluating a school guidance program. Defined first are the concept of guidance evaluation and basic terms in guidance evaluation. The purpose of guidance evaluation is discussed. Covered in a description of problems and difficulties in doing guidance evaluation are general problems; problems relating to…