Table 1. Characteristics of included studies.

First author, year	Country	Study interval	Design	LOE‡	No. of patients: LRC/ORC	Conversion, N(%)	Matching/Comparable*	Follow-up, mo†:LRC/ORCA
Akin, 2013 [19]	Turkey	2008–2011	Prospective	3b	15/15	0	1,2,3,5,6,8	40/35
Basillote, 2004 [20]	USA	2001–2003	Retrospective	3b	13/11.	2/13(15.4%)	1,2,3,4,6,7,8	NA
Ha, 2010 [21]	Korea	2003–2008	Retrospective	3b	36/34	0	1,2,3,6	22(3–58)/67(6–128)
Haber, 2008 [22]	USA	NA	Retrospective	4	50/50	NA	1,2,3,6	NA
Hemal, 2007 [23]	India	1999–2005	Prospective	3b	30/35	0	1,2,3,4,6	NA
Huang, 2005 [25]	China	1994–2004	Retrospective	4	33/48	0	1,2,6	13(1–21)/24(12–96)
Huang, 2008 [24]	China	1994–2007	Retrospective	4	108/63	0	1,2,3,4,5,6	(12–65)/(18–168)
Jin, 2012 [26]	China	2007–2012	Retrospective	4	32/35	0	1,2,6,7	(6–76)
Julien, 2009 [27]	France	2003–2007	Prospective	3b	38/30	2/38(5.3%)	1,2,3,4,5,6,8	NA
Khan, 2012 [28]	UK	2003–2008	Prospective	3b	58/52	0	1,2,6,8	39.4
Porpiglia, 2007 [30]	Italy	2002–2005	Prospective	3b	20/22	1/20(5%)	1,2,4,6,7,8	19.5(3–37)/19.2(3–39)
Taylor, 2004 [31]	USA	2002–2003	Prospective	3b	8./8	0	1,2,3,4,6,8	NA
Wang1, 2010 [32]	China	2006–2008	Prospective	3b	14/24	NA	1,2,3,4,6,8	NA
Wang2, 2010 [33]	China	2004–2007	Retrospective	4	31/39	0	1,2,3,5,6,8	18(1–34)/20(1–36)
Wu, 2009 [29]	China	2006–2009	Retrospective	3b	15/23	0	1,2,6,7,8	(3–8)/(3–24)
Zhang, 2010 [34]	China	2007–2009	Retrospective	3b	35/36	2/35(5.7%)	1,2,4,5,6,8	51.4 (1–159)

LRC =  laparoscopic radical cystectomy; ORC =  open radical cystectomy; LOE = Level of evidence; NA = data not available.

*Matching/comparable variables: 1 =  age, 2 =  gender, 3 =  BMI, 4 =  ASA, 5 =  Previous surgery history, 6 =  indication, 7 =  clinical stage, 8 =  diversion type;

^†Mean±SD or Median(Range);

^‡Based on US Preventive Services Task Force grading system.