Frequencies for first 10,000 rows of raceun variable in nhamcsed2009 dataset :

    patient |
     race - |
  unimputed |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      1,000       10.00       10.00
          1 |      6,289       62.89       72.89
          2 |      2,265       22.65       95.54
          3 |        298        2.98       98.52
          4 |         66        0.66       99.18
          5 |         36        0.36       99.54
          6 |         46        0.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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