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Table 1 Baseline characteristics of included studies

From: Oncological outcomes of laparoscopic versus open nephroureterectomy for the treatment of upper tract urothelial carcinoma: an updated meta-analysis

Study (year)

Country

Design

Duration

Number of patients (ORNU/LRNU)

Follow up, median (months) (ORNU/LRNU)

Extracted outcomes

NOSa/JSb

Ariane et al. (2012) [11]

France

R, multi-institutional

1995–2010

459/150

Whole cohort: 27

CSS, RFS

6a

Azawi et al. (2020) [12]

Denmark

R, population-based registry

2004–2017

321/1063

Whole cohort: 54

OS, IVRFS

6a

Capitanio et al. (2009) [13]

International

R, multi-institutional

1987–2007

979/270

Whole cohort: 49

CSS, RFS

8a

Fairey et al. (2013) [14]

Canada

R, multi-institutional

1994–2009

403/446

Whole cohort: 26.4

CSS, OS, RFS

7a

Favaretto et al. (2010) [15]

United States

R, single-center

2002–2008

109/53

Whole cohort: 23

IVRFS, RFS

6a

Fradet et al. (2014) [16]

Canada

R, multi-institutional

1990–2010

267/345

Whole cohort: 40.4

IVRFS

7a

Kido et al. (2018) [17]

Japan

R, multi-institutional

1995–2017

351/75*

41/35

CSS, OS, IVRFS, RFS

7a

Kim HS et al. (2016) [18]

Korea

R, single-center

1992–2012

271/100

57.6/38.8

CSS, OS

8a

Kim SH et al. (2019) [19]

Korea

R, multi-institutional

2000–2012

638/638**

37.8/44.3

CSS, OS, IVRFS

8a

Kitamura et al. (2014) [20]

Japan

R, multi-institutional

1995–2010

34/65

Whole cohort: 60

IVRFS

6a

Koda et al. (2007) [21]

Japan

R, single-center

1995–2005

27/79

Mean: 46.2/16.4

IVRFS

8a

Lee et al. (2019) [22]

Korea

R, single-center

2004–2017

161/137

Mean: 41.7/38.1

CSS, OS, IVRFS

8a

Lenis et al. (2018) [23]

United States

R, population-based registry

2000–2013

338/380

NR

OS

6a

Moschini et al. (2020) [24]

International

R, multi-institutional

2006–2018

757/757**

Whole cohort: 62

CSS, OS, RFS

8a

Shigeta et al. (2019) [25]

Japan

R, multi-institutional

1990–2015

72/72**

Whole cohort: 65.4

CSS, IVRFS

7a

Simone et al. (2009) [5]

Italy

RCT, single-center

2003–2006

40/40

Whole cohort: 41

CSS

4b

Taweemonkongsap et al. (2008) [26]

Thailand

R, single-center

2001–2007

29/31

Mean: 27.9/26.4

RFS

7a

Walton et al. (2011) [27]

International

R, multi-institutional

1987–2008

703/70

36/17

CSS, RFS

7a

  1. *Inverse-probability weighted analysis
  2. **Propensity-score matched analysis
  3. Abbreviations: CSS, cancer-specific survival; IVRFS, intravesical recurrence-free survival; JS, Jadad Scale; LRNU, laparoscopic radical nephroureterectomy; NOS, Newcastle-Ottawa Scale; OS, overall survival; ORNU, open radical nephroureterectomy; R, retrospective; RCT, randomized controlled trial; RFS, recurrence-free survival