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Table 3 The quality of the articles that is calculated using a checklist which includes 5 criteria

From: Pregnancy and appendicitis: a systematic review and meta-analysis on the clinical use of MRI in diagnosis of appendicitis in pregnant women

First Author

Country

Year

Tesla

Sample size

Mean age

Accuracy

NPV

PPV

Birchard

USA

2005

1.5

√

√

*

*

*

Cobben

-

2004

1

√

√

*

*

*

Fonseca

USA

2014

N/A

√

*

*

*

*

Israel

USA

2008

1.5

√

√

√

√

√

Jang

Korea

2011

1.5

√

√

*

*

*

Masselli

Italy

2009

1.5

√

*

*

√

√

Pedrosa

USA

2009

1.5

√

√

*

√

√

Ramalingam

USA

2014

1.5

√

√

*

√

√

Rapp

USA

2013

1.5

√

√

*

√

√

Theilen

USA

2014

1.5

√

√

*

√

√

Vu

Canada

2009

1.5

√

√

√

√

√

Oto

USA

2008

1.5

√

√

√

√

√

Patel

Canada

2017

1.5

√

√

√

√

√

Kereshi

USA

2017

1.5

√

√

*

√

√

Ah Wi

Korea

2018

1.5

√

√

√

√

√

Burke

USA

2015

1.5

√

√

√

√

√

Konrad

USA

2015

1.5

√

*

*

√

√

Aguilera

USA

2018

1.5

√

√

*

√

√

Theilen

USA

2014

1.5

√

*

*

√

√

  1. Based on these 5 criteria, articles were scored and then classified to three different quality including good quality (score more than 4), average quality (score 3–4), and weak quality (score below 3). Six studies had good quality