Table 1 Overview of included studies
First author, year | Number of included studies | Publication type | Description of analysed articles | |
|---|---|---|---|---|
With PMWS | Without PMWS | |||
Gattrell, 2016 [15] | 110 | 123 | Peer-reviewed publication | • Articles reporting RCT results published in BioMed Central journals • Biomed Central journals have been used in previous studies of adherence to CONSORT guidelines [22] |
Gattrell, 2016 [18] | 110 | 123 | Poster presentation | • Articles reporting RCT results published in BioMed Central journals (same cohort of articles analysed in Gattrell et al. [15]) |
Gattrell, 2017 [17] | 17 | 49 | Poster presentation | • Sub-analysis of outcomes reported in the top five medical journals comparing each article with its corresponding study protocol or clinical trial registry entry using publicly available COMPare data • The COMPare project is evaluating outcome reporting in clinical trials by comparing publications with the respective registry entries [23] |
Jacobs, 2010 [16] | 152 | 69 | Non-peer-reviewed publication | • RCTs published between October 2004 and August 2009 in the journal Current Medical Research and Opinion • Current Medical Research and Opinion almost exclusively publishes industry-funded studies |
Mills, 2017 [14] | 66 | 397 | Peer-reviewed publication | • RCTs published between 2011 and 2014 in five high-impact medical journals: The New England Journal of Medicine, Annals of Internal Medicine, The Lancet, The BMJ and JAMA • All included articles had been analysed in a cross-sectional study examining reporting quality of RCTs [24] |
Shah, 2015 [20] | 40 | 103 | Poster presentation | • Neuroscience and cardiology RCTs published between 2009 and 2014 in different journals from the Asia-Pacific region |
Shah, 2016 [19] | 404 | 392 | Poster presentation | • RCTs conducted to gain US FDA approval in 2014 • Innovative and novel drugs and new molecules approved by the FDA in 2014, identified in FDA reports |
Woolley, 2006 [8] | 60 | 940 | Congress abstract | • Original research articles published up to January 2005 from each of 10 high-impact factor, international, peer-reviewed medical journals from a range of therapeutic areas |