Hello, Everyone!

I am using stata to calculate the efficiency/inefficiency of innovation outputs of different countries. The data includes 63 countries over 16 years, and is unbalanced panel of 838 obs.

I have used stata to calculate the efficiency with one output using "sfpanel". Now I want to include multiple output variables (patent, publication and high-tech export), and inputs (R&D, R&D personnel, etc).

But sfpanel is only for single output, in this case, which command shall I use in stata? Or any other software can do this?

Thank you very much!

Jing Zhang

I am using stata to calculate the efficiency/inefficiency of innovation outputs of different countries. The data includes 63 countries over 16 years, and is unbalanced panel of 838 obs.

I have used stata to calculate the efficiency with one output using "sfpanel". Now I want to include multiple output variables (patent, publication and high-tech export), and inputs (R&D, R&D personnel, etc).

But sfpanel is only for single output, in this case, which command shall I use in stata? Or any other software can do this?

Thank you very much!

Jing Zhang

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