Drury 2012.

Methods	Identification of subsequent full‐length publications Searched electronic database MEDLINE; date of search not reported Person completing the search not reported Searched by all authors Matching criteria not reported Contacted abstract authors directly
Data	Included 909 abstracts presented at the 1993 to 2007 Society for Cardiothoracic Surgery meetings Included all abstracts
Comparisons	Proportion of abstracts published Median time to publication RCT or systematic review design versus other designs UK region Prospective versus retrospective Subspecialty
Outcomes	606 of 909 abstracts published Proportion of abstracts published by time Median time to publication for 2003 to 2007 Society for Cardiothoracic Surgery meetings = 15 months (range = ‐24 to 63 months) Factors related to proportion of abstracts published included 63/74 abstracts with RCT or systematic review design versus 129/208 abstracts with other types of design published (2003 to 2007 Society for Cardiothoracic Surgery meetings)
Notes	Surgery ‐ cardiovascular surgery Funding not reported
Risk of bias
Item	Authors' judgement	Description
Sampling method?	Yes	Included all abstracts.
Search for publications?	Yes	Searched 1 database and contacted abstract authors.
Follow‐up time?	Unclear	Date of search not reported.
Matching?	Unclear	Matching criteria not reported.
Adjustment for confounding?	Yes	Examined association of type presentation, study design, origin within UK, prospective status, award winning status, and subspecialty with publication using multivariable logistic regression analysis.