Frequencies for first 10,000 rows of f_rf_eclamp variable in natlterr2012 dataset :

  Eclampsia |
 (rf_eclam) |
          R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,184       21.84       21.84
          1 |      7,816       78.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 5 May 2016