Frequencies for first 10,000 rows of herpes variable in natl1989 dataset :

     Herpes |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         41        0.41        0.41
          2 |      9,755       97.55       97.96
          8 |          1        0.01       97.97
          9 |        203        2.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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