In the latest survey, the gap has narrowed dramatically, with 36% leaning towards remain and 33% towards leave, even when the methodological updates were implemented.
The new projections, covering 32 European countries, will be released by April 2014 and they will include important methodological updates.
Our study builds upon recent conceptual and methodological advances and updates knowledge on migration and HIV in Ghana.
The key updates include methodological advances, policy-oriented results presentation and the use of a new software tool developed by the authors.
Recent studies have shown that Cochrane reviews have greater methodological rigour and are updated more frequently than reviews published solely in paper-based journals [ 5, 6].
Although reporting quality improved on certain individual items there was no overall improvement seen with updating and methodological quality remained unchanged.
Although quality of reporting improved on certain individual items there was no overall improvement seen with updating and methodological quality remained unchanged.
Jadad found that Cochrane reviews had greater methodological rigor, more frequent updates and higher overall quality scores than those published in peer-reviewed paper journals, though both types were found to contain extensive and serious flaws.
As a result of the UNAIDS and GBD 2010 collaboration, several of the preliminary UNAIDS 2012 mortality estimates were adjusted; given the frequency of updates and methodological advances, tracing the evolution of specific country estimates across different sources was challenging.
We calculated mean differences in percentage, 95% confidence intervals and p-values for each of the individual items and the overall methodological quality score of the updated and pre-updated versions using OQAQ.
