Uysal 2008.

Methods	Identification of subsequent full‐length publications Searched electronic database PubMed to October 2007 Search completed by 'two observers' Searched by first, second, and last author Matched abstract to full‐length publication by Sample size
Data	Included 900 abstracts presented at the 2002 International Federation of Clinical Chemistry and Laboratory Medicine meeting Included all abstracts presented as posters
Comparisons	Proportion of abstracts published Mean and median time to publication Cumulative proportion of abstracts published Clinical research versus basic science research versus animal research Multi‐centered versus single center 'Prospective' versus 'retrospective' versus observational versus case series versus 'experimental' versus 'technical' design
Outcomes	125 of 900 abstracts published Proportion of abstracts published by time Mean time to publication = 11.9 months Median time to publication = 8 months Cumulative proportion of abstracts published at 48 months showed proportion published = 13.8% (124/900 abstracts) Factors related to proportion of abstracts published included 59/385 abstracts describing clinical research versus 52/357 abstracts describing basic science research versus 10/75 abstracts describing animal research published 81/407 abstracts with multiple centers versus 59/493 abstracts with a single center published 10/92 abstracts with 'prospective' cohort study design versus 2/9 abstracts with 'retrospective' cohort study design versus 4/83 abstracts describing observational research versus 47/284 abstracts describing case series design versus 10/75 abstracts with 'experimental' design versus 52/357 abstracts with 'technical' design published
Notes	Other non‐clinical specialties ‐ clinical chemistry Funding not reported
Risk of bias
Item	Authors' judgement	Description
Sampling method?	Yes	Included all abstracts presented as posters.
Search for publications?	No	Searched only 1 database.
Follow‐up time?	Yes	The meeting had 5 years follow‐up.
Matching?	No	Matched by only 1 criterion.
Adjustment for confounding?	Yes	Examined association of type of science, multi‐center status, prospective status, and study design with publication using multivariable logistic regression.