Frequencies for first 10,000 rows of urf_diab variable in natl2004 dataset :

   Diabetes |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        323        3.23        3.23
          2 |      8,696       86.96       90.19
          9 |        981        9.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 21 Jan 2016