Frequencies for first 10,000 rows of race variable in nhamcsopd2006 dataset :

                      patient race |      Freq.     Percent        Cum.
-----------------------------------+-----------------------------------
                        White Only |      7,102       71.02       71.02
       Black/African American only |      2,241       22.41       93.43
                        Asian only |        268        2.68       96.11
  Native Hawaiian/Oth Pac Isl only |         64        0.64       96.75
American Indian/Alaska Native only |         81        0.81       97.56
       More than one race reported |        244        2.44      100.00
-----------------------------------+-----------------------------------
                             Total |     10,000      100.00

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