CDISC-Gloss – The formal evaluation of the quantitative evidence from two or more trials bearing on the same question. NOTE: This most commonly involves the statistical combination of summary statistics from the various trials, but the term is sometimes also used to refer to the combination of the raw data. The methodology for performing the meta- analysis can be found in a meta-analysis protocol, or plan. [After ICH E9 Glossary] See also meta-analysis protocol.