Frequencies for first 10,000 rows of findings variable in mort1975 dataset :

   findings |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,498       14.98       14.98
          2 |        311        3.11       18.09
          8 |      2,936       29.36       47.45
          9 |      5,255       52.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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