The Safety and Feasibility of Enhanced Recovery after Surgery in Patients Undergoing Pancreaticoduodenectomy: An Updated Meta-Analysis

Table 1

Characteristics and quality assessment of the included studies.

Study	Year	Country	Study design	Sample size		Total	MINORS score
				ERAS group	Control group
Kennedy et al.	2007	United States	Case-control study	91	44	135	15/24
Vanounou et al.	2007	United States	Case-control study	145	64	209	13/24
Balzano et al.	2008	Italy	Case-control study	252	252	504	15/24
Abu Hilal et al.	2013	Britain	Case-control study	20	24	44	14/24
Kobayashi et al.	2014	Japan	Case-control study	100	90	190	13/24
Braga et al.	2014	Italy	Case-control study	115	115	230	18/24
Coolsen et al.	2014	Netherlands	Case-control study	86	97	183	15/24
Shao et al.	2015	China	Case-control study	325	310	635	14/24
Sutcliffe et al.	2015	Britain	Case-control study	65	65	130	14/24
Williamsson et al.	2015	Sweden	Case-control study	50	50	100	16/24
Morales Soriano et al.	2015	Spain	Case-control study	41	44	85	16/24
Joliat et al.	2015	Switzerland	Case-control study	74	87	161	15/24
Bai et al.	2016	China	Case-control study	124	63	187	15/24
Zouros et al.	2016	Greece	Case-control study	75	50	125	16/24
Deng et al.	2017	China	RCT	76	83	159
Su et al.	2017	China	Case-control study	31	31	62	15/24
Takagi et al.	2019	Japan	RCT	37	37	74
Perinela et al.	2019	France	Case-control study	47	30	77	19/24
Lavu et al.	2019	United States	RCT	37	39	76
Hwang et al.	2019	Korea	RCT	123	124	247

RCT: randomized controlled trial; MINORS: methodological index for nonrandomized studies. Unconformity to MINORS score criteria.