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Table 1 Quality assessment of each eligible study according to the NOS

From: Time interval between hCG administration and oocyte retrieval and ART outcomes: an updated systematic review and meta-analysis

Study

Selection

Comparability

1

Outcome

Scores

1

2

3

4

1

2

3

Skvirsky S (2021) [27]

*

*

*

*

*

*

*

*

8

Bao L (2019) [26]

*

*

*

*

*

*

*

*

8

Chen YY (2014) [25]

*

*

*

*

*

*

 

*

7

Ghasemian F (2013) [24]

*

*

*

*

 

*

 

*

6

Gong SQ (2012) [23]

*

*

*

*

*

*

*

*

8

Bokal EV (2005) [21]

*

*

*

*

 

*

 

*

6

  1. NOS Newcastle–Ottawa Quality Assessment Scale
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Reproductive Biology and Endocrinology

ISSN: 1477-7827

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