Table 1 Descriptive details about exposure dataset and outcome dataset.

From: Gastroesophageal reflux disease increases the risk of rheumatoid arthritis: a bidirectional two-sample Mendelian randomization study

Exposure or outcome

n cases

Controls

Ancestry

Origin

References or cohort study

PMID

Web source

Gastroesophageal reflux disease

129,080

473,524

EUR

United Kingdom

Ong, J.S. et al. (2022)16

34,187,846

https://gwas.mrcieu.ac.uk

Rheumatoid arthritis

22,350

74,823

EUR

Canada

North America

Netherland

Sweden

German

United Kingdom

Spain

France

Ishigaki, K. et al. (2022) (discovery)17

36,333,501

https://pubmed.ncbi.nlm.nih.gov

12,555

240,862

EUR

Finland

Kurki, M.I. et al. (2023) (validation)18

36,653,562

https://www.finngen.fi/en

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