Frequencies for first 10,000 rows of excebld variable in natl1990 dataset :

      Other |
  excessive |
   bleeding |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         12        0.12        0.12
          2 |      9,922       99.22       99.34
          9 |         66        0.66      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016