Frequencies for first 10,000 rows of excebld variable in natl1992 dataset :

      Other |
  excessive |
   bleeding |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         13        0.13        0.13
          2 |      9,951       99.51       99.64
          9 |         36        0.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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