Frequencies for first 10,000 rows of anemia variable in natl2002 dataset :

     Anemia |
(Hct.<30/Hg |
     b.<10) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        445        4.45        4.45
          2 |      9,242       92.42       96.87
          9 |        313        3.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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