Frequencies for first 10,000 rows of ethun variable in namcs2015 dataset :

    Patient |
ethnicity - |
  unimputed |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      2,313       23.13       23.13
          1 |      1,095       10.95       34.08
          2 |      6,592       65.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017