Frequencies for first 10,000 rows of rf_diab variable in natlterr2008 dataset :

Prepregnanc |
 y Diabetes |
        RFP |
582=f_rf_di |
       ab R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,061       60.61       60.61
          N |      3,910       39.10       99.71
          Y |         29        0.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 May 2016