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

     Anemia |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         13        0.13        0.13
          2 |      9,797       97.97       98.10
          9 |        190        1.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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