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Table 1 Basic characteristics and quality assessment of enrolled documents

From: Comparison of effect between nasobiliary drainage and biliary stenting in malignant biliary obstruction: a systematic review and updated meta-analysis

 

Country

Study design

Period of study

Type of PBD

Case

Sex (M/F)

Age

Quality (NOS)

Fujii T [8]

Japan

PC

2008-2014

ENBD

50

30/20

66.5 (39-83)

7

    

EBS

72

46/26

67 (38-84)

 

Huang X [9]

China

RC

2005-2014

ENBD

18

5/13

60.6 ± 8.4

7

    

EBS

37

10/27

58.1 ± 8.3

 

Jo JH [10]

Korea

RC

2005-2012

ENBD

13

8/13

58.9 (42-77)

5

    

EBS

42

23/19

61.1 (29-80)

Kawakami [11]

Japan

RC

1999-2009

ENBD

60

44/16

71 (45–81)

7

   

EBS

20

4/16

70 (59–77)

 

Kawakubo [12]

Japan

RC

2009-2014

ENBD

85

74/44

69 ± 9

6

   

EBS

33

 

Nakai Y [13]

Japan

RC

2010-2014

ENBD

281

189/92

71 (64-76)

7

    

EBS

76

47/29

70 (65-74)

 

Sasahira [14]

Japan

RC

2010-2012

ENBD

166

64/102

70 (63-76)

7

    

EBS

253

64/189

69 (62-75)

 

Sugiyama [15]

Japan

RC

2008-2012

ENBD

38

  

6

    

EBS

38

   

Zhang G [16]

China

RC

2009-2016

ENBD

102

58/44

55.26 ± 9.07

7

    

EBS

51

29/22

56.24 ± 9.65

  1. EBS endoscopic biliary stenting, ENBD endoscopic nasobililary drainage, NA not available, NOS Newcastle-Ottawa Score, RC retrospective clinical study, PC prospective clinical study