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Table 2 Quality of included studies

From: Insulin resistance in women with recurrent miscarriage: a systematic review and meta-analysis

 

Selection

Comparability

Exposure

 

Author/year published

Adequate Case Definition

Representative of cases

Selection of controls

Definition of Controls

Age

Other factors

Ascertainment of exposure

Same ascertainment

Non-Response Rate

Total

Craig 2002 [26]

*

*

 

*

*

*

*

*

*

8

Diejomaoh 2007 [27]

*

*

 

*

*

*

*

*

*

8

Baban 2010 [23]

*

  

*

  

*

*

*

5

Celik 2011 [25]

*

*

 

*

*

*

*

*

*

8

Wang 2011 [38]

*

  

*

  

*

*

*

5

Maryam 2012 [36]

*

  

*

*

*

*

*

*

7

Hong 2013 [30]

*

  

*

  

*

*

*

5

Ispasoiu 2013 [31]

*

  

*

  

*

*

*

5

Kazerooni 2013 [34]

*

   

*

*

*

*

*

6

Ota 2014 [37]

*

  

*

*

 

*

*

*

6

El-Dorf 2016 [29]

*

  

*

  

*

*

*

5

Jiao 2016 [33]

*

  

*

*

 

*

*

*

6

Azizi 2019 [22]

*

     

*

*

*

4

Lin 2019 [35]

*

  

*

  

*

*

*

5

Bahia 2020 [24]

*

 

*

*

*

*

*

*

*

8

Edugbe 2020 [28]

*

  

*

*

 

*

*

*

6

Jiang 2021 [32]

*

  

*

  

*

*

*

5

Habets 2022 [39]

*

  

*

  

*

*

*

5

Singh 2022 [40]

*

  

*

*

*

*

*

 

6

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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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