Mily 2008.

Methods	Identification of subsequent full‐length publications Searched electronic database PubMed from January 2001 to December 2005 Person completing the search not reported Search criteria not reported Matching criteria not reported
Data	Included 128 abstracts presented at 2002 and 2003 European Society of Hypertension meetings Included all abstracts
Comparisons	Proportion of abstracts published 'Positive' versus not 'positive' Sample size more than 500 versus between 50 and 500 versus less than 50 Oral versus poster presentation International versus European Union country versus non‐European Union country versus non‐European country 'Treatment concealed' versus no 'treatment concealed' published RCT design versus non‐RCT design
Outcomes	34 of 128 abstracts published Proportion of abstracts published by time not reported Factors related to proportion of abstracts published included 25/93 'positive' (not defined) versus 9/35 not 'positive' abstract results published 5/19 abstracts with sample size greater than 500 versus 16/47 abstracts with sample size between 50 and 500 versus 13/62 abstracts with sample size below 50 published 6/15 abstracts presented orally versus 28/115 abstracts presented as poster published 15/28 abstracts with an international origin versus 13/57 abstracts originating from a single European Union country versus 2/18 abstracts originating from a single non‐European Union country versus 4/25 abstracts originating from outside Europe published 17/43 abstracts with 'treatment concealed' versus 14/71 abstracts without 'treatment concealed' published 24/65 abstracts with RCT design versus 10/52 abstracts with non‐RCT design published
Notes	General medicine/primary care ‐ hypertension 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?	No	All meetings had less than 48 months follow‐up.
Matching?	Unclear	Matching criteria not reported.
Adjustment for confounding?	No	Examined association of positive results, sample size, type presentation, European origin, study design, and 'treatment concealment' with publication using stratified analysis and unspecified. statistical tests.