Dear editor
EBM tools to gather the best evidence for interventions in in vitro fertilisation programmes. Evidence-based reproductive medicine as stated by M. Dhont (M. Dhont, 2013) a co-ordination between clinicians and reviewers (methodologists) is necessary to conduct adequate clinical trials and meta-analyses. However, although live birth rate might be the gold standard, ongoing pregnancy as outcome is quite comparative and sufficient to serve as a reliable outcome in interventions (Clarke and Van Rumste, 2010).
Moreover, EBM offers other tools than large scale multi-centric clinical trials to get solid evidence for reproductive interventions. First of all, registering all trials before starting could avoid multiple efforts on the same topic. Secondly, sample size calculations of new trials are to be determined by the current evidence in published meta -analyses (building cumulative meta-analyses) (Lau et al., 1995) and will result in less scaled trials to reach sufficient evidence to guide clinical practice. Thirdly, Time Sequential Analysis (Wetterslev et al., 2008) helps to determine if a meta-analysis contains enough evidence to perform or withhold a certain intervention, avoiding the further conduction of unnecessary trials.
References
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- Lau j, Schmid C, Chalmers TC. Cumulative meta-analysis of clinical trials builds evidence for exemplary medical care. J Clin Epidemiol. 1995;48:45–57. doi: 10.1016/0895-4356(94)00106-z. [DOI] [PubMed] [Google Scholar]
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