Schwartz 1992.

Methods	Identification of subsequent full‐length publications Searched database Index Medicus; date of search not reported Person completing the search not reported Searched by first author Matching criteria not reported Searched all issues of the Journal of Air Medical Transport Contacted abstract authors directly
Data	Included 312 abstracts presented at the 1987 to 1990 Association of Air Medical Transport meetings Included all abstracts accepted for oral presentation
Comparisons	Proportion of abstracts published
Outcomes	56 of 312 abstracts published Proportion of abstracts published by time not reported No factors related to proportion of abstracts published reported
Notes	Emergency medicine ‐ air medical services Funding not reported
Risk of bias
Item	Authors' judgement	Description
Sampling method?	Yes	Included all abstracts accepted for oral presentation.
Search for publications?	Yes	Searched 1 database, contacted abstract authors, and performed handsearches.
Follow‐up time?	Unclear	Date of search not reported.
Matching?	Unclear	Matching criteria not reported.