pooled estimation

[vneves]

Hi everyone!

I am trying to estimate a pooled model. My eq esp is Profitabilityit= c + liqit+ cred it risk it +ef it + bank ownership i + gdp t + interest rate t

I dont now how to fill in common coefficients, cross-sections specif coeff and period specif coeff.

Note that i have variables that vary by individual and time; only by individual and only by time.

Sorry, my english is bad.