Hello,
I'll need help with the estimation of marginal effects using firthlogit.

I'm working with dummy as dependent variable that has an inflated number of 0 over 1 (almost 90%).
I'm using the firthlogit to implement a penalized maximum likelihood estimation method for reducing bias in the distribution suggested by Coveney (2015).
However when I tried to estimate marginal effects but the results are very weird.

For instance, Odd ratios from estimations in are positive but marginal effect comes all negative.

Thanks