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Table 2 Quality assessment of the included studies

From: Comparison of the retroperitoneal versus Transperitoneal laparoscopic Adrenalectomy perioperative outcomes and safety for Pheochromocytoma: a meta-analysis

Study

Design

Selection

Comparability

Outcome

Total

Representativeness of exposed cohort

Selective of nonexposed Cohort

Ascertainment of exposure

Outcome not present at start

Assessment of outcome

Adequate follow-up length

Adequacy of follow-up

Li

R

*

 

*

*

**

*

*

*

8

Dickson

R

*

 

*

*

**

*

*

*

8

Kiriakopoul

R

*

  

*

**

*

*

*

7

Shiraishi

R

*

 

*

*

**

*

*

*

8

  1. R Retrospective study The symbol “*” represents score