or is not. This measurement problem can be easily addressed by changing the unit of
analysis from a particular person to a particular group, defined as persons who share a
particular immigration status, live in the same state, and are observed at the same point
in time. I can then calculate the probability of receiving Medicaid and of being covered
by employer-sponsored insurance for the “representative person” in each group, as well as
calculate the mean of the various socioeconomic characteristics.