I've found that sometimes my plm
regressions in R (package plm
) don't default automatically to the use of plm::lag
, what has caused me a lot of trouble. I've searched for the reasons for this in other posts, but I haven't found anything. Does anyone know how to correct this without having to write plm::lag
in every regression?
Just a simple example in code:
library(plm)
model <- plm (GDP ~ plm::lag(expenses), data=dd, effect='twoways',...)