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Table 1 Characteristics of included studies

From: Off-clamp partial nephrectomy has a positive impact on short- and long-term renal function: a systematic review and meta-analysis

Study

Design

Country

Age, mean

Patients, no

Surgical approach

Tumor Sizea

Follow-up off/on

Level of evidence

Quality Score

off

on

off

on

total

off

on(cm)

Guillonneau2003 [15]

R

France

60.6

60.0

12

16

28

LPN

1.9

2.5

12.2/1.21 m

3b

6

Kane2004 [16]

R

USA

62

52

12

15

27

LPN

2.2

3.0

4.3/4.3 m

3b

6

Kobayashi2008 [17]

R

Japan

60.3

51.8

5

5

10

LPN

2.4

2.0

1/1 m

4

5

Hong2009 [19]

R

Korea

55.5

54.8

17

16

33

LPN

2.1

3.3

26.1/31.3 m

3b

6

Koo2010 [20]

R

Korea

58.0

63.7

11

10

21

LPN

2.6

2.3

postoperati

3b

5

Thompson2010 [21]

R

USA

63

62

96

362

458

OPN,LPN

2.5

3.4

39.6/39.6 m

3b

5

Smith2011 [22]

R

USA

62

62

192

116

308

O + L + R

3.0

2.8

12/12 m

4

5

Petrasz2012 [23]

R

Poland

54.7

58.3

13

25

38

LPN

3.1

3.3

postoperative

3b

4

George2013 [25]

R

USA

59.2

59.4

150

289

439

LPN

2.7

3.3

6/6 m

3b

6

Kaczmarek2013 [27]

RM

USA

60.4

60.2

49

283

332

RPN

NA

21/21 m

3b

6

Porpiglia2012 [24]

R

Italy

65.1

61.3

41

76

117

LPN

2.4

3.2

postoperative

4

7

Salevitz2015 [33]

R

USA

67

62

95

191

286

O + L + R

2.5

2.9

50.9/32.2 m

3b

5

Ener2016 [34]

RM

Turkey

53.0

54.4

12

22

34

RPN

3.3

3.2

3/3 m

3b

6

Wang2016 [35]

P

China

54.4

54.4

22

22

44

LPN

2.0

1.9

0.2/0.2 m

2b

8

Anderson2017 [36]

R

USA

58.5

56.1

50

50

100

RPN

3.1

3.6

9/9 m

3b

6

Rosen2017 [37]

RM

USA

60.0

61.5

41

82

123

RPN

1.8

2.0

9.2/9.2 m

3b

8

Verze2017 [38]

R

Italy

56.0

57.2

64

37

101

LPN

4.7

5.1

6/6 m

3b

7

Weizer2008 [18]

R

USA

57

53

36

25

61

LPN

1.9

1.9

10/12 m

3b

4

Hung2013 [26]

R

USA

NA

81

272

353

LPN,RPN

3.4

2.9

postoperative

4

4

Lee2014 [31]

R

Korea

53.6

54.5

39

201

240

OPN

2.0

2.3

12/12 m

3b

4

Komninos2015 [32]

R

Korea

53

51

23

114

137

RPN

1.7

3.3

12/12 m

3b

4

T Tawatchi2018 [9]

R

Thailand

50.1

56.0

12

27

39

RPN

2.2

3.5

26/19 m

3b

4

Acar2014 [29]

R

Turkey

51.1

46.2

30

14

44

RPN

3.8

3.6

18.9/18.9 m

3b

7

Krane2013 [28]

p

USA

57.1

62.4

19

58

77

RPN

1.6

2.9

4.5/5.5 m

2b

4

Jabaji2014 [30]

R

USA

55

57

75

241

316

OPN

3.9

3.3

34.7/34.7 m

3b

4

  1. off = off-clamp partial nephrectomy; on = on-clamp partial nephrectomy; LPN = laparoscopic partial nephrectomy; OPN = open partial nephrectomy; RPN = robot-assisted partial nephrectomy; O + L + R = OPN + LPN + RPN; m = months
  2. R retrospective, P prospective, RM respective matched, NA data not available
  3. amean tumor size