Impact of enhanced recovery after surgery programs on pancreatic surgery: A meta-analysis

Table 2 Study Characteristics and Quality Assessment.

Study	Year	Country	Study design	Sample size		ERAS programs1	MINORS Score
				ERAS group	Control group
Kennedy et al[14]	2007	United States	Case-control	91	44	e, f, g, h	16/24
Vanounou et al[15]	2007	United States	Case-control	145	64	c, d, g, h	15/24
Balzano et al[16]	2008	Italy	Case-control	252	252	d, e, f, g, h	13/24
Kennedy et al[17]	2009	United States	Case-control	71	40	d, e, f, g, h	11/24
Abu Hilal et al[18]	2013	Britain	Case-control	20	24	b, e, f, g, h	15/24
Braga et al[19]	2014	Italy	Case-control	115	115	a, b, c, d, e, f, g, h	17/24
Pillai et al[20]	2014	India	Case-control	20	20	c, d, e, f, g, h	17/24
Coolsen et al[21]	2014	Holland	Case-control	86	97	b, c, d, e, f, g, h	12/24
Nussbaum et al[22]	2014	United States	Case-control	100	142	c, e, f, g, h	11/24
Yui et al[23]	2014	Japan	Case-control	57	52	e, g, h	13/24
Nussbaum et al[24]	2014	United States	Case-control	50	100	c, e, f, g, h	16/24
Kobayashi et al[25]	2014	Japan	Case-control	100	90	a, e, g, h	13/24
Shao et al[26]	2015	China	Case-control	325	310	d, e, f, g, h	15/24
Joliat et al[27]	2015	Switzerland	Case-control	74	87	a, b, c, d, e, f, g, h	15/24
Partelli et al[28]	2015	Italy	Case-control	22	66	a, c, d, e, f, g, h	13/24
Williamsson et al[29]	2015	Sweden	Case-control	50	50	c, d, e, f, g, h	17/24
Morales Soriano et al[30]	2015	Spain	Case-control	41	44	a, b, c, d, e, f, g, h	17/24
Bai et al[31]	2016	China	Case-control	124	63	a, d, e, f, g, h	15/24
Zouros et al[32]	2016	Greece	Case-control	75	50	a, b, c, d, e, f, g, h	16/24
Dai et al[33]	2017	China	Case-control	68	98	a, b, c, e, f, g, h	15/24

¹ERAS programs: a: No bowel preparation in the preoperative period; b: Clear fluids until 2-3 h before surgery; c: Restrictive policy of intravenous fluids in the intra-operative period; d: Multimodal analgesia of the postoperative period; e: Clear fluids or food intakes in the early period; f: Enhanced mobilization in the early period; g: Removal of the drainage tube; h: Others. ERAS: enhanced recovery after surgery; MINORS score: Methodological Index for Non-Randomized Studies checklist.