Petticrew 2008.

Methods	Identification of subsequent full‐length publications Searched electronic database MEDLINE, Web of Science to February 2005 Search completed by information specialist Search criteria not reported Matched abstract to full‐length publication by Title Contents Contacted abstract authors directly
Data	Included 224 abstracts presented at the 1998 and 1999 British Sociological Association Medical Sociology meetings Included all abstracts accepted for oral presentations that described qualitative research
Comparisons	Proportion of abstracts published
Outcomes	99 of 224 abstracts published Proportion of abstracts published by time not reported No factors related to proportion of abstracts published reported
Notes	Sociology Reported receiving no funding
Risk of bias
Item	Authors' judgement	Description
Sampling method?	Yes	Included all abstracts that described specific subgroup, so low risk of bias.
Search for publications?	Yes	Searched 2 databases and contacted abstract authors.
Follow‐up time?	Yes	All meetings had at least 6 years follow‐up.
Matching?	Yes	Matched by 2 different criteria.