Frequencies for first 10,000 rows of rf_pdiab variable in natlterr2015 dataset :

Pre-pregnan |
cy Diabetes |
      Y Yes |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,078       10.78       10.78
          N |      8,707       87.07       97.85
          U |         57        0.57       98.42
          Y |        158        1.58      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Oct 2016