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Table 2 Assessment of the cross-sectional study quality

From: What is the impact of birth weight corrected for gestational age on later onset asthma: a meta-analysis

Studies

1

2

3

4

5

6

7

8

Gessner and Chimonas [12]

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Lu et al. [18]

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Wang et al. [20]

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Kalen et al. [14]

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Koshy et al. [24]

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Miyake and Tanaka [15]

No

No

Yes

Yes

Yes

Yes

Yes

Yes

  1. For cross-sectional studies, 1, inclusion criteria of subjects; 2, describe the study subjects and site; 3, assessment of exposure factors; 4, assessment of health problems; 5, clarification of confounding factors; 6, control confounding factors; 7, evaluation of outcome indicators; 8, appropriate data analysis methods