Whitehouse 2009.

Methods	Identification of subsequent full‐length publications Searched electronic database PubMed, Embase, Google/Google Scholar; dates of search not reported Search completed by investigator Searched by first, second, and third author, title, and contents Matched abstract to full‐length publication by Contents
Data	Included 1138 abstracts presented at the 2004 and 2005 British Hip Society, 2004 and 2006 European Hip Society, 2004 to 2006 British Orthopedic Association, and 2003 and 2005 European Federation of Orthopaedics and Trauma meetings Included all abstracts accepted for oral presentation related to hip surgery, except Instructional Course Lectures
Comparisons	Proportion of abstracts published, overall and by meeting Mean time to publication, overall and by meeting
Outcomes	252 of 1138 abstracts published 17/90 abstracts presented at the 2004 British Hip Society meeting, 15/73 at the 2005 British Hip Society meeting, 27/68 at the 2004 European Hip Society meeting, 30/173 at the 2006 European Hip Society meeting, 8/23 at the 2004 British Orthopedic Association meeting, 5/31 at the 2005 British Orthopedic Association meeting, 8/41 at the 2006 British Orthopedic Association meeting, 57/293 at the 2003 European Federation of Orthopaedics and Trauma meeting, and 85/346 at the 2005 European Federation of Orthopaedics and Trauma meeting published. Proportion of abstracts published by time Mean time to publication = 4.9 months Mean time to publication = 6.9 months for 2004 British Hip Society meeting Mean time to publication = 6.8 months for 2005 British Hip Society meeting Mean time to publication = ‐4.1 months for 2004 European Hip Society meeting Mean time to publication = 0.7 months for 2006 European Hip Society meeting Mean time to publication = 8.3 months for 2004 British Orthopedic Association meeting Mean time to publication = 6.0 months for 2005 British Orthopedic Association meeting Mean time to publication = 2.0 months for 2006 British Orthopedic Association meeting Mean time to publication = 9.5 months for 2003 European Federation of Orthopaedics and Trauma meeting Mean time to publication = 8.3 months for 2005 European Federation of Orthopaedics and Trauma meeting No factors other than meeting and meeting year related to proportion of abstracts published reported
Notes	Orthopedics/orthopedic surgery Funding not reported
Risk of bias
Item	Authors' judgement	Description
Sampling method?	Yes	Included all abstracts presented orally that described a specific topic with reasonable exceptions, so low risk of bias.
Search for publications?	Yes	Searched 3 databases.
Follow‐up time?	Unclear	Date of search not reported.
Matching?	No	Matched by only 1 criterion.
Adjustment for confounding?	No	Examined association of meeting and meeting year with publication using stratified analysis and Fisher's Exact test.