- Julia H. LittellJulia H. LittellGraduate School of Social Work and Social Research, Bryn Mawr College
Systematic reviews summarize a body of empirical evidence to address important questions for practice and social policy. Widely used to compile evidence about intervention effects in the helping professions, systematic reviews can also be used to assess rates, trends, associations, and variations on many topics. Credible reviews are based on the science of research synthesis, which provides the theoretical and empirical foundations that undergird efforts to minimize bias and error at each step in the review process to ensure that systematic reviews are comprehensive and their conclusions are accurate. Methods for the synthesis of quantitative studies are well developed. Meta-analysis, a set of statistical procedures, is often used in quantitative reviews, but meta-analysis is only one part of the systematic review process; other steps are needed to limit bias and error. Methods for systematic reviews of qualitative research are under development, as are strategies to combine quantitative and qualitative data in reviews.
- Research and Evidence-Based Practice