Hackett 2014.

Methods	Identification of subsequent full‐length publications Searched electronic database PubMed for the year before presentation until December 31, 2012 Person completing the search not reported Searched by first author, keywords, and first author affiliation Matched abstract to full‐length publication by All authors Title Abstract Disclosure of prior presentation
Data	Included 2345 abstracts presented at the 2004, 2005, and 2007 International Liver Transplantation Society and 2006 and 2008 Joint International Congress of the International Liver Transplantation Society, European Liver and Intestinal Transplant Association, Liver Intensive Care of Europe meetings Included all abstracts
Comparisons	Proportion of abstracts published, overall and by meeting Cumulative proportion of abstracts published, overall and by meetings Oral versus plenary versus poster presentation Clinical research versus basic science research RCT design versus observational design versus case report design English language versus non‐English language Subspecialty
Outcomes	913 of 2345 abstracts published 150/299 abstracts presented at the 2004 International Liver Transplantation Society meeting, 155/338 at the 2005 International Liver Transplantation Society meeting, 245/515 at the 2006 Joint International Congress meeting, 172/561 at the 2007 International Liver Transplantation Society meeting, and 192/634 at the 2008 Joint International Congress meeting published Proportion of abstracts published by time Cumulative proportion of abstracts published at 48 months showed proportion published = 38.9% (913/2345 abstracts) overall Cumulative proportion of abstracts published at 60 months showed proportion published = 30.3% (192/634 abstracts) for the 2008 Joint International Congress of the International Liver Transplantation Society, European Liver and Intestinal Transplant Association, Liver Intensive Care of Europe Cumulative proportion of abstracts published at 60 months showed proportion published = 30.7% (172/561 abstracts) for the 2007 International Liver Transplantation Society Cumulative proportion of abstracts published at 80 months showed proportion published = 47.6% (245/515 abstracts) for the 2006 Joint International Congress of the International Liver Transplantation Society, European Liver and Intestinal Transplant Association, Liver Intensive Care of Europe Cumulative proportion of abstracts published at 80 months showed proportion published = 45.9% (155/338 abstracts) for the 2005 International Liver Transplantation Society Cumulative proportion of abstracts published at 80 months showed proportion published = 50.2% (150/299 abstracts) for the 2004 International Liver Transplantation Society Factors related to proportion of abstracts published included 300/619 abstracts presented orally versus 60/120 abstracts presented in plenary sessions versus 559/1606 abstracts presented as poster published 815/2183 abstracts describing clinical research versus 103/164 abstracts describing basic science research published 39/59 abstracts describing RCTs versus 699/1904 abstracts describing observational designs versus 77/220 abstracts describing case reports published 237/706 abstracts in English language versus 674/1639 abstracts in non‐English language published
Notes	Surgery ‐ liver transplantation Funding through university departments
Risk of bias
Item	Authors' judgement	Description
Sampling method?	Yes	Included all abstracts.
Search for publications?	No	Searched only 1 database.
Follow‐up time?	Yes	All meetings had at least 48 months follow‐up.
Matching?	Yes	Matched by 4 different criteria.
Adjustment for confounding?	No	Examined association of meeting, type presentation, type science, study design, origin in English language country, and subspecialty with publication using stratified analysis and Chi2 or Fisher's Exact tests and log rank analysis for time to publication.