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Table 2 Newcastle-Ottawa scale as a quality assessment

From: Pancreaticoduodenectomy versus limited resection for duodenal gastrointestinal stromal tumors: a systematic review and meta-analysis

Author, year

Selection

Comparability

Outcome

Total score

Exposed cohort

Non-exposed cohort

Ascertainment of exposure

Outcome of interest

Control for factor

Assessment of outcome

Follow-up long enough

Adequacy of follow-up

Gu [28], 2018

*

*

*

*

*

 

*

*

7

Lee, [21] 2018

*

*

*

*

*

 

*

*

7

Zhang, [22] 2018

*

*

*

 

*

 

*

*

6

Shi, [19] 2017

*

*

*

*

*

 

*

*

7

Chen, [23] 2017

*

*

*

*

*

 

*

*

7

Sugase, [20] 2016

*

*

*

*

*

 

*

*

7

Duffaud, [29] 2014

*

*

*

*

*

 

*

*

7

Zhou, [30] 2013

*

*

*

*

*

 

*

*

7

Colombo, [15] 2012

*

*

*

*

*

 

*

*

7

Tien, [31] 2010

*

*

*

*

*

 

*

 

6

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BMC Surgery

ISSN: 1471-2482

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