ABSTRACT
In this book, we present numerous examples of detailed meta-analysis in
many areas of application using features of R. In doing so, with the exception
of having access to patient level data in one chapter, we used summary data
for a set of studies to be combined already meta-analyzed and reported in the
literature. In presenting statistical details and results of our meta-analyses, we
identified the research questions to which the meta-analyses appearing in the
literature were directed. So we did not start by specifying a research question
of interest, then perform searches of databases such as PUBMED, MEDLINE,
PsycARTICLES or ERIC and identify the totality of studies that could pro-
vide summary information relative to the question, obtain publications of the
studies, and then abstract the summary data to be synthesized.
