F-statistic

[neuroGB]

Is there a way to calculate and obtain F-statistics for IVs within the R package?

[remlapmot]

Please see the MVMR https://wspiller.github.io/MVMR/index.html package and its strength_mvmr() function

https://wspiller.github.io/MVMR/articles/MVMR.html#step-3-test-for-weak-instruments-1
https://wspiller.github.io/MVMR/reference/strength_mvmr.html

which implements the methods in Eleanor's paper for genotype summary level data https://doi.org/10.1002/sim.9133.

[neuroGB]

So there's no way to do it within the TwoSampleMR package...?
Also, do we need the SummaryStats for the exposure, too, to calculate the F stat? I believed not...

Many thanks, anyway!