Good morning the community.

I am investigating the relationship between intangible asset (dependent variable) and firm performance (independent variable) using 6 independent variables as control variables (EVA, SIZE, LEVERAGE, GROWTH, PoR, VOLATILITY). My sample consists of SBF 120 companies in the period of 2010-2020 ( a total of 120 firms).

I want to run a panel data model.
My file is named File.dta. I upload the document in attachement because the command "dataex" doesn't work (too much variables).
HTML Code:
dataex
I created a do file editor to run my commands to find the differents estimators. The name of the file is Command3.do. I upload the document in attachment.
I created the associated Excel File with output. The name of the file is File.xlsx.

I would like to know if my commands (and mostly my equations are well written in my do file editor). I have difficulties to write the correct equation for the different estimators. I don't know where to use logarithm, where to use square variable, where to use time-constant variables, where to use dummy variables.


Thank you for your answer.