Frequencies for first 10,000 rows of raceun variable in nhamcsed2007 dataset :

          patient race - unimputed |      Freq.     Percent        Cum.
-----------------------------------+-----------------------------------
                             blank |      1,469       14.69       14.69
                        white only |      6,013       60.13       74.82
       black/african american only |      2,146       21.46       96.28
                        asian only |        237        2.37       98.65
  native hawaiian/oth pac isl only |         17        0.17       98.82
american indian/alaska native only |         64        0.64       99.46
       more than one race reported |         54        0.54      100.00
-----------------------------------+-----------------------------------
                             Total |     10,000      100.00

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