Impact of mechanical bowel preparation in elective colorectal surgery: A meta-analysis

Table 2 Baseline patient demographics for all studies included

Ref.	Yearpublished	Study methodology	Study numbers		Male: Female gender		Indication for surgery	Location	Primary anastomosis	Laparoscopic approach
			MBP, n	No MBP, n	MBP	No MBP				MBP, n	No MBP, n
Ji et al[76]	2017	Observational	538	831	Unknown	Unknown	Cancer	Rectum	Y	Unknown	Unknown
Chan et al[77]	2016	Observational	159	97	85:74	55:42	Cancer	Colon and rectum	Y	159	97
Hu et al[64]	2017	RCT	76	72	Unknown	Unknown	Cancer	Colon and rectum	Y	Unknown	Unknown
Bhattacharjee et al[65]	2015	RCT	38	33	21:17	20:13	Cancer, inflammatory bowel disease, volvulus, tuberculosis	Colon and rectum	Y	0	0
Allaix et al[74]	2015	Observational	706	829	361:345	432:397	Cancer, adenoma, diverticulitis, reversal of Hartmann’s procedure, rectal prolapse	Colon and rectum	Y	829	706
Kiran et al[29]	2015	Observational	6146	2296	3030:3116	1111:1185	Unknown	Colon and rectum	N	4443	1389
Yamada et al[66]	2014	Observational	152	106	92:60	65:41	Cancer	Colon only	Y	97	64
Otchy et al[67]	2014	Observational	86	79	39:47	39:40	Cancer, diverticular disease, IBD, rectal prolapse, ischemic colitis, volvulus, colovaginal fistula	Colon and rectum	Y	37	48
Kim et al[75]	2014	Observational	1363	1112	502:694	669:610	Unknown	Colon and rectum	Y	709	472
Tahirkheli et al[62]	2013	RCT	48	48	28:20	24:24	Cancer, diverticular disease, IBD, ischemic colitis	Colon and rectum	Y	unknown	unknown
Sasaki et al[61]	2012	RCT	38	41	17:21	24:17	Cancer	Colon only	Y	29	19
Bertani et al[45]	2011	RCT	114	115	65:49	60:55	Cancer	Colon and rectum	Y	55	51
Roig et al[68]	2010	Observational	39	69	Unknown	Unknown	Cancer, diverticular disease, IBD, FAP	Colon and rectum	Y	12	20
Bretagnol et al[46]	2010	RCT	89	89	56:33	46:43	Rectal cancer	Rectum only	Y	73	74
Pitot et al[69]	2009	Observational	59	127	31:28	53:74	Cancer, diverticular disease, IBD	Colon only	Y	26	30
Alcantara Moral et al[47]	2009	RCT	70	69	41:28	48:22	Cancer	Left colon and rectum	Y	12	15
Miron et al[70]	2008	Observational	60	39	Unknown	Unknown	Unknown	Colon and rectum	Y	Unknown	Unknown
Pena-Soria et al[48]	2008	RCT	65	64	35:29:00	33:22	Cancer, IBD	Colon and rectum	Y	Unknown	Unknown
Leiro et al[59]	2008	RCT	64	65	39:25	38:27	Benign and malignant colorectal pathology	Colon and rectum	N	Unknown	Unknown
Contant et al[40]	2007	RCT	670	684	337:333	345:339	Cancer, IBD	Colon and rectum	Y	None	None
Bretagnol et al[71]	2007	Observational	61	52	42:19	32:20	Rectal cancer	Rectum only	Y	Unknown	27
Jung et al[49]	2007	RCT	686	657	306:380	317:340	Cancers, diverticular disease, adenoma	Colon only	Y	None	None
Veenhof et al[72]	2007	Observational	78	71	28:43	33:45	Not specified	Colon and rectum	Y	Unknown	Unknown
Ali et al[63]	2007	RCT	109	101	Unknown	Unknown	Unknown	Colon and rectum	Y	Unknown	Unknown
Jung et al[50]	2006	RCT	27	17	Unknown	Unknown	Cancer, adenoma and diverticular disease	Rectum only	Y	None	None
Platell et al[51]	2006	RCT	147	147	Unknown	Unknown	Cancer, IBD, diverticular disease, adenoma	Colon and rectum	N	Unknown	Unknown
Fa-Si-Oen et al[52]	2005	RCT	125	125	58:67	56:69	Cancer, diverticular disease	Colon only	Y	None	None
Bucher et al[53]	2005	RCT	78	75	47:31	34:41	Cancer, diverticular disease, reversal of Hartmann’s procedure, adenoma, endometriosis	Left colon and rectum	Y	20	22
Ram et al[54]	2005	RCT	164	165	99:65	102:63	Cancer, diverticular disease, IBD	Colon and rectum	Y	Unknown	Unknown
Zmora et al[37]	2003	RCT	187	193	103:84	94:99	Cancer, diverticular disease, IBD	Colon and rectum	Y	Unknown	Unknown
Young Tabusso et al[55]	2002	RCT	24	23	12:12	9:14	Unknown	Colon and rectum	Y	Unknown	Unknown
Miettinen et al[56]	2000	RCT	138	129	68:70	62:67	Cancer, IBD, diverticular disease	Colon and rectum	91% primary anastomosis in both arms	None	None
Memon et al[73]	1997	Observational	61	75	32:29	44:31	Cancer, diverticular disease, IBD, adenoma, lipoma	Left colon and rectum	Y	Unknown	Unknown
Fillmann et al[60]	1995	RCT	30	30	Unknown	Unknown	Cancer, diverticular disease, IBD, ischemic colitis	Colon and rectum	N	Unknown	Unknown
Burke et al[57]	1994	RCT	82	87	52:30	43:44	Cancer, diverticular disease, IBD	Left colon and rectum	Y	Unknown	Unknown
Brownson et al[58]	1992	RCT	86	93	Unknown	Unknown	Cancer and other	Colon and rectum	Y	Unknown	Unknown

FAP: Familial adenomatous polyposis; IBD: Inflammatory bowel disease; MBP: Mechanical bowel preparation; RCT: Randomised controlled trial.