Frequencies for first 10,000 rows of rf_diab variable in natlterr2006 dataset :

Prepregnanc |
 y Diabetes |
        RFP |
582=f_rf_di |
       ab R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,275       62.75       62.75
          N |      3,695       36.95       99.70
          Y |         30        0.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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