Hello, I hope you are well.
I am new to stata and I have the following question, I hope you can help me. Thanks in advance.
I have to make a gravity model. in my database I have several variables: year, origin gdp, destination gdp, the distance between origin and destination, and others, all of them are panel data.
However, I have to add the variable immigration of origin and destination, which is a variable at a given point in time. To do the gravity model (ols and ppml) this may cause me problems, so what should I do with the immigration variable before doing the gravity model?
I am new to stata and I have the following question, I hope you can help me. Thanks in advance.
I have to make a gravity model. in my database I have several variables: year, origin gdp, destination gdp, the distance between origin and destination, and others, all of them are panel data.
However, I have to add the variable immigration of origin and destination, which is a variable at a given point in time. To do the gravity model (ols and ppml) this may cause me problems, so what should I do with the immigration variable before doing the gravity model?
