Frequencies for first 10,000 rows of urf_diab variable in natlterr2005 dataset :

   Diabetes |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        286        2.86        2.86
          2 |      7,927       79.27       82.13
          9 |      1,787       17.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015