Frost 2015.

Methods	Identification of subsequent full‐length publications Searched electronic database PubMed to November 2014 Person completing the search not reported Searched by all authors and title Matching criteria not reported
Data	Included 764 abstracts presented at the 2009 to 2011 Scoliosis Research Society (SRS) and International Meeting of Advanced Spinal Techniques meetings Included all abstracts presented orally
Comparisons	Proportion of abstracts published, overall and by meeting Award‐winning versus not
Outcomes	339 of 764 abstracts published 59/150 abstracts presented at the 2009 International Meeting of Advanced Spinal Techniques, 57/114 at the 2009 SRS meeting, 50/134 at the 2010 International Meeting of Advanced Spinal Techniques meeting, 64/115 at the SRS meeting, 65/135 at the 2011 International Meeting of Advanced Spinal Techniques, and 44/116 at the 2011 SRS meeting published Proportion of abstracts published by time not reported Factors related to proportion of abstracts published included 49/77 award‐winning abstracts versus 290/684 non award‐winning abstracts published
Notes	Orthopedics/orthopedic surgery ‐ spine Reported receiving no direct funding for the study, but fellowship support from AO Spine
Risk of bias
Item	Authors' judgement	Description
Sampling method?	Yes	Included all abstracts presented orally.
Search for publications?	No	Searched only 1 database.
Follow‐up time?	Yes	The meetings in 2011 only had 36 months follow‐up. All other meetings had at least 48 months follow‐up.
Matching?	Unclear	Matching criteria not reported.
Adjustment for confounding?	No	Examined association of meeting and award winning status with publication using stratified analysis and t tests.