%0 Journal Article %T Meta-analysis of non-randomized studies in interventional cardiology: a critical appraisal %A Eliano Pio Navarese %A Alessandro Lupi %A Antonino Buffon %A Mara Sansa %J Italian Journal of Public Health %D 2009 %I %R 10.2427/5761 %X Utilisation of meta-analysis is becoming more and more common in interventional cardiology. The aim of this statistical approach is to collect a large number of patients from randomized clinical studies and nonrandomized registries in order to obtain a pooled estimate of the results. Nevertheless, simply pooling these results without a correct methodological approach can easily lead to biased conclusions. In this report we analyse the possible methodological drawbacks of such an approach and we suggest a simplified check-list of items to be considered in the effort of building-up a meta-analysis from non-randomized studies. %K Meta-analysis %K randomized controlled trials %K non-randomized studies %K mehodological drawbacks %U http://ijphjournal.it/article/view/5761