Frequencies for first 10,000 rows of raceun variable in nhamcsed2008 dataset :

          patient race - unimputed |      Freq.     Percent        Cum.
-----------------------------------+-----------------------------------
                             blank |      1,193       11.93       11.93
                        white only |      6,617       66.17       78.10
       black/african american only |      1,843       18.43       96.53
                        asian only |        170        1.70       98.23
  native hawaiian/oth pac isl only |         39        0.39       98.62
american indian/alaska native only |         66        0.66       99.28
       more than one race reported |         72        0.72      100.00
-----------------------------------+-----------------------------------
                             Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016