Hanchanale 2014.

Methods	Identification of subsequent full‐length publications Searched electronic database PubMed to March 2011 Person completing the search not reported Search criteria not reported Matching criteria not reported
Data	Included 538 abstracts presented at 2005 European Association for Palliative Care Congress meeting Included all abstracts except invited abstracts
Comparisons	Proportion of abstracts published Cumulative proportion of abstracts published UK versus Dutch versus German versus Italian versus Norwegian versus rest of the world origin
Outcomes	230 of 538 abstracts published Proportion of abstracts published by time Cumulative proportion of abstracts published at 36 months showed proportion published = 39.0% (210/538 abstracts) Factors related to proportion of abstracts published included 70/163 abstracts originating from the UK versus 22/47 abstracts originating from the Netherlands versus 15/38 abstracts originating from Germany versus 6/32 abstracts originating from Italy versus 20/29 abstracts originating from Norway versus 97/229 abstracts with rest of the world origin published
Notes	General medicine/primary care ‐ palliative care Reported no funding received Data extracted from research letter
Risk of bias
Item	Authors' judgement	Description
Sampling method?	Yes	Included all abstracts with reasonable exceptions.
Search for publications?	No	Searched only 1 database.
Follow‐up time?	Yes	The meeting had 6 years follow‐up.
Matching?	Unclear	Matching criteria not reported.
Adjustment for confounding?	No	Examined association of country of origin with publication using stratified analysis.