Nasir 2013.

Methods	Identification of subsequent full‐length publications Searched electronic database PubMed, MEDLINE, Google/Google Scholar, and the African Journal OnLine through October 2012 Person completing the search not reported Searched by all authors and keywords Matched abstract to full‐length publication by All authors Title Methodology Conclusions
Data	Included 164 abstracts presented at the 2006, 2008, and 2010 Pan‐African Pediatric Surgical Association meetings Included all abstracts
Comparisons	Proportion of abstracts published, overall and by meeting Median time to publication Oral versus poster presentation Observational design versus case report versus review versus technical report North American versus European versus African versus rest of the world origin Retrospective versus prospective design Statistical inference stated versus not Control group included versus not Subspecialty
Outcomes	49 of 164 abstracts published 17/45 abstracts presented at the 2006 meeting, 23/62 at the 2008 meeting, and 9/57 at the 2010 meeting published Proportion of abstracts published by time Median time to publication = 15 months (IQR = 5 to 26 months) Factors related to proportion of abstracts published included 38/118 abstracts presented orally versus 11/46 abstracts presented as poster published 42/135 abstracts describing observational design versus 1/11 abstracts describing case reports versus 3/8 abstracts describing reviews versus 1/6 abstracts describing technical reports versus 2/4 abstracts describing surveys published 3/7 abstracts with origin in North American versus 7/18 with origin in Europe versus 38/133 abstracts with origin in Africa versus 0/5 abstracts with rest of the world origin published 32/96 abstracts describing retrospective design versus 10/39 abstracts describing prospective design published Statistical inference stated versus not: 57.9% vs. 26.2% (OR 3.8, 95% CI = 1.44 to10.34) Control group included versus not: 35.3% vs. 24.7% (OR 1.3, 95% CI = 0.46 to 3.79)
Notes	Surgery ‐ pediatrics Funding not reported
Risk of bias
Item	Authors' judgement	Description
Sampling method?	Yes	Included all abstracts.
Search for publications?	Yes	Searched 3 databases.
Follow‐up time?	Yes	The 2010 meeting only had 24 months follow‐up. All other meetings had at least 48 months follow‐up.
Matching?	Yes	Matched by 4 different criteria.
Adjustment for confounding?	No	Examined association of meeting year, type presentation, study design, country of origin, prospective status, presence of statistical inference, presence of a control group, and subspecialty with publication using stratified analysis and Fisher's Exact or Mann‐Whitney U tests.