Table 2 Heterogeneity results of MR analysis. Total of F-statistic and R2.

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

exposure on outcome

IVW

MR-Egger

Total R2 (%)

Total F-statistic

Cochran’s Q

Cochran’s Q P value

P value

Cochran’s Q

Cochran’s Q P value

P value

GERD on RA (discovery)

85.57

2.10e−2

2.8e−6

82.52

2.90e−2

5.4e−1

2.82

282.43

GERD on RA (validation)

87.04

1.09e−1

1.8e−8

85.92

1.10e−1

6.3e−2

3.29

280.41

RA(discovery) on GERD

51.54

8.98e−4

1.2e−2

51.51

5.82e−4

2.6e−1

15.40

710.01

RA(validation) on GERD

6.86

2.31e−1

2.3e−1

6.37

1.73e−1

3.5e−1

4.90

2187.7