Kumar 1995.

Methods	Identification of subsequent full‐length publications Searched electronic database MEDLINE to September 1994 Person completing the search not reported Searched by first author and one other author ‐ unspecified Matching criteria not reported
Data	Included 275 abstracts presented at the 1992 American Society for Gastrointestinal Endoscopy meeting Included all abstracts
Comparisons	Proportion of abstracts published Mean time to publication by presentation format Cumulative proportion of abstracts published Oral versus poster presentation versus neither
Outcomes	76 of 275 abstracts published Proportion of abstracts published by time Mean time to publication for oral presentations = 13 months (range = 6 to 24 months) Mean time to publication for poster presentations = 15 months (range = 4 to 24 months) Mean time to publication for other presentation format = 13 months (range = 5 to 26 months) Cumulative proportion of abstracts published at 12 months showed proportion published = 9.5% (26/275 abstracts) Factors related to proportion of abstracts published included 15/46 abstracts presented orally versus 51/150 abstracts presented as posters versus 10/79 abstracts presented in other format published
Notes	Gastroenterology ‐ endoscopy Funding not reported Data extracted from abstract
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	The meeting only had 24 months follow‐up.
Matching?	Unclear	Matching criteria not reported.
Adjustment for confounding?	No	Examined association of type presentation with publication using stratified analysis