Effect of enhanced recovery after surgery on inflammatory bowel disease surgery: A meta-analysis

Table 1 Characteristics of the studies included in the meta-analysis

Ref.	Year	Study date	Study design	Single/Multi center	Disease type	Country	Sample size	NOS
Spinelli et al[24]	2012	January 2008 to September 2011	Retrospective	Multi center	CD	Italy	90	7
Mineccia et al[25]	2020	May 2007 to December 2018	Observational	Single center	CD	Italy	94	8
Liska et al[26]	2019	January 2015 to April 2017	Retrospective	Single center	CD and UC	United States	671	8
D'Andrea et al[27]	2020	January 2013 to December 2018	Retrospective	Single center	CD and UC	United States	753	8
Zhu et al[28]	2018	December 2015 to December 2016	RCT	Single center	CD	China	32	8
Vrecenak et al[29]	2014	December 2000 to December 2010	Retrospective	Single center	CD	United States	71	7
West et al[30]	2013	January 2005 to January 2011	Retrospective	Multi center	CD and UC	United Kingdom	68	8
Meunier et al[16]	2021	November 2015 to December 2019	Retrospective	Multi center	Unknown	France	160	8

CD: Crohn's disease; RCT: Randomized controlled trial; UC: Ulcerative colitis; NOS: Newcastle-Ottawa scale.