Dear all,
I have a question regarding how to define and generate regional trends. Specifically, I have read a paper studying about the effects of malaria eradication on child mortality. The author of that paper calculates intensity of pre-malaria campaign as a proxy for the effects of malaria eradication. The intensity is calculated by region and urban areas and then they interact it with exposed cohorts (treatment) in their DID estimations. The parallel trends assumption could be violated if policy-makers systematically assigned more nets to regions where mortality or fertility were already changing faster. So, one way to address it is to control for regional trends or region-specific time trends. However, the author did not clearly define a definition of region-specific time trends that makes me wondering about that variable. I would appreciate if anyone is familiar with this term in this specific context and can share your thoughts with me. Thank you.
I have a question regarding how to define and generate regional trends. Specifically, I have read a paper studying about the effects of malaria eradication on child mortality. The author of that paper calculates intensity of pre-malaria campaign as a proxy for the effects of malaria eradication. The intensity is calculated by region and urban areas and then they interact it with exposed cohorts (treatment) in their DID estimations. The parallel trends assumption could be violated if policy-makers systematically assigned more nets to regions where mortality or fertility were already changing faster. So, one way to address it is to control for regional trends or region-specific time trends. However, the author did not clearly define a definition of region-specific time trends that makes me wondering about that variable. I would appreciate if anyone is familiar with this term in this specific context and can share your thoughts with me. Thank you.
Code:
Data clear input str32 country float year byte(age region) float urban "A" 2017 45 1 0 "A" 2017 30 1 0 "A" 2017 38 0 1 "A" 2017 28 0 1 "A" 2017 25 1 0 "B" 2010 20 0 1 "B" 2010 34 1 0 "B" 2010 44 0 1 "B" 2010 18 0 1 "B" 2010 30 1 0 "C" 2014 15 0 1 "C" 2014 35 0 1 "C" 2014 32 1 0 "C" 2014 40 1 0 "C" 2014 45 0 1 "D" 2009 30 0 1 "D" 2009 40 1 0 "D" 2009 28 1 0 "D" 2009 52 1 0 "D" 2009 39 0 1 end
Comment