Diagnosis and treatment of iron-deficiency anemia in gastrointestinal bleeding: A systematic review

Table 2 Characteristics of the included guidelines

Guideline organization/society/authors	Year	GI etiology	Origin	Level of development
Iron-Deficiency Anemia Working Group Consensus Report[34]	2017	IBD and GIB	Turkey	Scientific committee/expert group
The International Consensus Upper Gastrointestinal Bleeding Conference Group[38]	2010	Nonvariceal UGIB	International	Scientific committee/expert group
Dahlerup et al[17] Guideline approved by the Danish Society of Gastroenterology and Hepatology	2014	GIB, various etiologies	Denmark	Independent authors and approved by a professional organization/society
Baveno IV Consensus Workshop[43]	2015	Variceal bleeding	International	Scientific committee/expert group
European Crohn's and Colitis Organization[10]	2015	IBD	Europe	Professional organization/society
Gasche et al[11]	2007	IBD	Europe	Scientific committee/expert group
British Society of Gastroenterology[12]	2011	-	United Kingdom	Professional organization/society
Hong Kong Society of Gastroenterology, the Hong Kong IBD Society, the Hong Kong Society of Digestive Endoscopy, and the Hong Kong Red Cross Blood Transfusion Service[13]	2018	Acute and chronic GIB	Hong Kong	Professional organization
The 2018 Patient Blood Management International Consensus Conference[39]	2019	Acute GIB	Germany	Scientific committee/expert group
British Society of Gastroenterology[40]	2019	ALGIB	United Kingdom	Professional organization
National Institute for Health and Care Excellence[41]	2015	-	United Kingdom	Professional organization
Strate et al[42]	2016	ALGIB	United States and Israel	Independent authors
World Health Organization[33]	2001	-	International	Professional organization

ALGIB: Acute lower gastrointestinal bleeding; GIB: Gastrointestinal bleeding; IBD: Inflammatory bowel disease; UGIB: Upper gastrointestinal bleeding.