Frequencies for first 10,000 rows of eclamp variable in natlterr1999 dataset :

  Eclampsia |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         24        0.24        0.24
          2 |      9,972       99.72       99.96
          9 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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