Frequencies for first 10,000 rows of anemia variable in natl1998 dataset :

     Anemia |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        210        2.10        2.10
          2 |      9,790       97.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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