Study	Reason for exclusion
de Franchis 2005	Full manuscript was added; therefore, we excluded the abstract study.
Delvaux 2008	Aim was not for diagnostic test for oesophageal varices, it was for any oesophageal disease. No 2 x 2 table.
Ganc 2010	Different aim of the study: to detect with endocapsule small bowel lesions in people with portal hypertension due to schistosomiasis.
Ishiguro 2008	Full manuscript was added; therefore, we excluded the abstract study.
Matheus 2006	Only half of the participants have the reference standard test available for comparison of the index test within 1 year. No 2 x 2 table.
Muhammad 2006	Lack of information of the results, including 2 x 2 table, participants characteristics, reference standard, index test, etc.
Wigg 2011	Not possible to extract data for 2 x 2 table.