Frequencies for first 10,000 rows of raceun variable in namcs2010 dataset :

          patient race (unimputed) |      Freq.     Percent        Cum.
-----------------------------------+-----------------------------------
                             blank |      2,614       26.14       26.14
                        white only |      6,189       61.89       88.03
       black/african american only |        845        8.45       96.48
                        asian only |        292        2.92       99.40
  native hawaiian/oth pac isl only |         21        0.21       99.61
american indian/alaska native only |         14        0.14       99.75
       more than one race reported |         25        0.25      100.00
-----------------------------------+-----------------------------------
                             Total |     10,000      100.00

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