examine if gender proportion of board affects firm’s innovation.

This paper should examine if gender proportion of board affects firm’s innovation. Innovation is measured as number of patents and citations. Time series is from 1992 to 2022. The data can be computed on Stata or Eviews and codes for these programs are needed for submission.
On empirical strategy must employ at least 2 empirical strategies from: 1)
Multivariate regression; 2) Fixed effects; 3) Difference-in-Difference; 4) Instrumental variable; 5) or other. Must discuss strategy, what kind of problems are being solved, why do these problems arise