I am trying to assess the trade effects of an RTA. I am using PPML to estimate a gravity model. It's a panel dataset so I am trying to use dyadic and time fixed effects as per much of the literature.
I run the following commands with the output provided in the attached png. file:
xtset countrypairnumber year
xtpoisson tradevalueus lnGDPIM lnGDPEX lnpopim lnpopex ceta1 ceta2 ceta3, fe
My questions are:
1) Is this correct?
2) I am required to produce an r squared value in my published results, how do I ascertain an r squared value for the xtpoisson command?
3) Literature employing apparently similar methods include a constant in their published results, can I / should I ascertain a constant value for the xtpoisson command?
I run the following commands with the output provided in the attached png. file:
xtset countrypairnumber year
xtpoisson tradevalueus lnGDPIM lnGDPEX lnpopim lnpopex ceta1 ceta2 ceta3, fe
My questions are:
1) Is this correct?
2) I am required to produce an r squared value in my published results, how do I ascertain an r squared value for the xtpoisson command?
3) Literature employing apparently similar methods include a constant in their published results, can I / should I ascertain a constant value for the xtpoisson command?
Attached Files
