Hello,

I developed a random effect model as follows:

mixed firmperformance_ln typeofstrategy firmage firmsize i.y* || id: ||country:

I am interested in understanding the role of strategy in firm performance and other variables are control variables.

Now I want to write fixed-effect model I used the menu of the Sata and also I read the help of the command and my model is


mixed firmperformance_ln typeofstrategy firmage firmsize i.y*


But I am not sure that is correct or not. The nested part is just omitted in this model

Is this model correct?

Thank you