Hi everyone

I want to investigate from wich debt rate the labor productivity will start decreasing to determine the optimal debt level. I know that I need to implement debt tresholds but wich commands do I therefore have to insert?

I have already had the following advice:

"If it is your expectation that labor productivity sometimes increases with debt rate and sometimes decreases with debt rate depending on the value, then you need a different, non-linear, model."

It is important that the commands will be available in Stata version 12.1 because I am not in the possibility to use another version of Stata.


Thanks in advance.