Hello,
Does anyone know why I may be getting missing strata for CEM matched
observations? These matched observations do have cem weights, however they
do not have a strata number. I checked the variables that I match on and
they are all numeric and not missing. So it is a little bit puzzling to me
why strata values are not generated for a huge subset of CEM matched
observations. I would appreciate any help on this.
Additionally, does anyone know if CEM uses matching with replacement or
without replacement?
Thanks for your time.
Best,
Hulya
