Can i control MRTs in PPML method by estimating exporter, importer and year group dummies by following command
. ppml exp lndist cont rta lnpgdpi lnpgdpj efwi efwj lnpopi lnpopj dexporter dimporter dyear
I have use following commands to generate and group the dummies
. qui tab year, g(dyear)
. qui tab exporter, g(dexporter)
. qui tab importer, g(dimporter)
. egen dyear=group(dyear*)
. egen dexporter=group(dexporter*)
. egen dimporter=group(dimporter*)
. ppml exp lndist cont rta lnpgdpi lnpgdpj efwi efwj lnpopi lnpopj dexporter dimporter dyear
I have use following commands to generate and group the dummies
. qui tab year, g(dyear)
. qui tab exporter, g(dexporter)
. qui tab importer, g(dimporter)
. egen dyear=group(dyear*)
. egen dexporter=group(dexporter*)
. egen dimporter=group(dimporter*)
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