Prendergast 2013.

Methods	Identification of subsequent full‐length publications Searched electronic database The Cochrane Library, Embase, MEDLINE, Web of Science, Ovid, and Wiley Interscience databases until September 2012 Person completing the search not reported Searched by first and senior author, and keywords Matching criteria not reported
Data	Included 938 abstracts presented at the 1995 and 2005 British Society of Gastroenterology meetings Included all abstracts
Comparisons	Proportion of abstracts published, overall and by meeting Mean time to publication by meeting Proportion published by study design and subspecialty between 1995 and 2005 meetings
Outcomes	165 of 938 abstracts published 88/497 abstracts presented at the 1995 meeting and 77/441 at the 2005 meeting published Proportion of abstracts published by time Mean time to publication = 22.2 months (SD = 16.9) for the 1995 meeting Mean time to publication = 18.6 months (SD = 13.3) for the 2005 meeting Examined individual factors related to study design and subspecialty for comparison of proportion of abstracts published between 1995 and 2005 meetings
Notes	Gastroenterology Reported having received no funding
Risk of bias
Item	Authors' judgement	Description
Sampling method?	Yes	Included all abstracts.
Search for publications?	Yes	Searched 6 databases.
Follow‐up time?	Yes	All meetings had more than 48 months follow‐up.
Matching?	Unclear	Matching criteria not reported.
Adjustment for confounding?	No	Examined association of meeting year with publication using stratified analysis using Chi2 or t tests.