McDaniel (2007) constructively reviews the many detailed demands of an adequate meta-analysis.
However all three possibilities should be considered in a modelling study by different scenarios based on adequate meta-analyses.
Attaining adequate meta-analytic power reveals that the shift is: Empirically robust evident in both artificial (chambers, greenhouses) and field (FACE) conditions.
Until recently, evidence of the effectiveness of hypnosis as an analgesia adjunct during childbirth was limited to three small trials being of adequate quality for meta-analysis.
Although current availability of data is far from adequate, some simple meta-analyses should be possible, given the increasing number of case studies (see Neumann and Hermans 2015).
We carried out a cumulative meta-analysis of the effect of tranexamic acid on blood transfusion based on the date of publication, and, when restricted to trials with adequate concealment, cumulative meta-analyses of the effect of tranexamic acid on blood transfusion, myocardial infarction, and mortality.
In the process, only the studies performed by Barbieri et al. and Li et al. yielded adequate data for the meta-analysis.
There were adequate data to perform meta-analysis for safety outcomes including any AE, SAE, diarrhoea, hot flushes, gastric upset, itching, hypertension, headache, dizziness, anxiety, insomnia, drowsiness and fatigue (see online supplementary table S1).
6– 8, 10– 13 While sample size calculations are almost consistently mandated for single trials, 17 there has been comparatively little discussion of the need for adequate power in a meta-analysis.
As the identified health economic evaluations were too heterogeneous and did not report adequate details for a meta-analysis of results, we performed a narrative synthesis of economic evidence including a description of all relevant information regarding study methods and cost-effectiveness results.
For network meta-analyses with adequate reporting, the conduct quality was frequently inadequate: 11% of these network meta-analyses involved a search of only one bibliographic database, 20% restricted the study selection to published articles, 43% lacked an independent duplicate study selection, and 21% lacked an independent extraction of duplicate data.
