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Table 2 NOs score of studies included in the systematic review and meta-analysis

From: Association between gestational exposure and risk of orofacial clefts: a systematic review and meta-analysis

Study

Selection

Comparability

Outcome/Expose

Total score

Wang L et al.

3

2

2

7

Jiang W et al.

4

1

2

7

Zhao J et al.

4

2

2

8

Marshall EG et al.

4

1

2

7

Hansen CA et al.

4

1

2

7

Zhu Y et al.

3

1

2

6

Zhou Y et al.

4

2

2

8

Hwang BF et al.

4

1

2

7

Liu FH et al.

4

2

2

8

Gilboa SM et al.

3

2

2

7

Tanner JP et al.

4

1

2

7

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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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