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Table 6 Quality assessment of cross-sectional studies

From: Effect of arsenic on the risk of gestational diabetes mellitus: a systematic review and meta-analysis

First authors

Year

Country

Study type

Item

Total score

Quality

A

B

C

D

E

F

J

H

I

J

K

Khan

2018

Bangladesh

Cross-sectional study

1

1

0

1

1

0

0

0

0

1

0

5

Moderate

MuƱoz

2018

Chile

Cross-sectional study

1

0

0

1

1

0

1

1

0

1

0

6

Moderate

Zhang

2021

China

Cross-sectional study

1

1

1

1

1

0

1

1

0

1

0

8

High

Liang

2023

China

Cross-sectional study

1

1

1

1

1

0

1

1

0

1

0

8

High

  1. A: Define the source of information (0/1 point); B: List inclusion and exclusion criteria for exposed and unexposed subjects (cases and controls) or refer to previous publications (0/1 point); C: Indicate time period used for identifying patients (0/1 point); D: Indicate whether or not subjects were consecutive if not population based (0/1 point); E: Indicate if evaluators of subjective components of study were masked to other aspects of the status of the participants (0/1 point); F: Describe any assessments undertaken for quality assurance purposes (0/1 point); G: Explain any patient exclusions from analysis (0/1 point); H: Describe how confounding was assessed and/or controlled (0/1 point); I: If applicable, explain how missing data were handled in the analysis (0/1 point); J: Summarize patient response rates and completeness of data collection (0/1 point); K: Clarify what follow-up, if any, was expected and the percentage of patients for which incomplete data or follow-up was obtained (0/1 point)