Frequencies for first 10,000 rows of anemia variable in natl1995 dataset :

     Anemia |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        152        1.52        1.52
          2 |      9,805       98.05       99.57
          9 |         43        0.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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