Multiple studies have been performed on a variety of substances, often producing
contradictory results. Meta-analysis has provided a means of evaluating these disparate …

Enormous thought, effort, and time have been devoted to establishing four requirements for
acceptable evidence in modem science:(1) The substances under investigation should be …

An historical perspective of statistical methods for combining the results of independent
studies is provided. The information explosion subsequent to 1950 has been a critical factor …

With the proliferation of meta-analyses in the medical literature have come conflicting
studies. In addition, observance of guidelines for the performance of meta-analyses has …

Meta-analysis as a method has generated mixed reactions in the medical sciences, ranging
from complete aversion (3), to skepticism (4, 5), to extremely enthusiastic support (6) …

A fairly new type of research, termed meta-analysis, attempts to analyze and combine the
results of previous reports. In 1992 we updated our 1987 survey of 86 meta-analyses of …

I hope that the article on meta-analysis in the Septem ber 1985 issue of the Journal^ will
generate interest among pharmacy researchers in using this technique, and I congratulate …

Dr. Greenland presents" reasons why currently popular meta-analytic methods require more
critical interpretations than they are usually accorded"(1, p. 295). I concur with the …

Meta-analyses are statistical methods to evaluate large numbers of clinical trial data sets to
answer specific clinical questions. Meta-analyses can be performed when large clinical trials …

We are currently wimessing an" epidemic" of meta-analyses and overviews in the scientific
literature. This is a relatively new phenomenon and this article addresses some of the …