Forum: open-discussion

RE: SFA with correction for sample selection [ Reply ] By: Moritz Flubacher on 2014-10-22 09:36	[forum:41564]
Thanks for your response. Due to the fact that I need the implementation to finish my research project, I am very interested in implementing this feature. Unfortunately, I do not know if I have the capacity to do it nor the required programming skills in R (I guess). Best regards, Moritz

RE: SFA with correction for sample selection [ Reply ] By: Arne Henningsen on 2014-10-20 20:11	[forum:41552]
Dear Moritz SFA models with correction for sample selection is on my to-do list but I am afraid that I won't be able to implement this feature in the near future. Sorry! Please let me know if you are interested in implementing this feature--I could assist you with this. Best wishes, Arne

SFA with correction for sample selection [ Reply ]
By: Moritz Flubacher on 2014-10-20 13:30

[forum:41550]

Dear Arne,
I am comparing technical efficiency and productivity of organic and conventional dairy farms using SFA. I am working with the frontier package in R. I use Propensity Score Matching (PSM) to control for observable sample selection bias. I was wondering if there is an way to control unobservable sample selection bias like it was done in Greene (2010) "A stochastic frontier model with correction for sample selection" using R. Thanks a lot for your reponse. Best regards, Moritz