I'm trying to do a Oaxaca regression using IPUMS CPS data but I keep getting errors. I was wondering, if anyone here is able to help me with this issue.
CODE:
library("oaxaca")
oaxaca1<-oaxaca(HOURWAGE ~ age + male + educ_hs + educ_smcoll + educ_bach + educ_adv |white| educ_hs + educ_smcoll + educ_bach + educ_adv, data = data1, R = 1000)
CONSOLE:
Variables d1 + d2 + d3 + ... in argument 'formula' must indicate membership in mutually exclusive categories.
What should I do to fix this?
PS: Education, "white" and "male" are dummy variables. My data has "1130166" observations.