Frequencies for first 10,000 rows of anemia variable in linkco1991us_num dataset :

     Anemia |
(Hct.<30/Hg |
     b.<10) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        190        1.90        1.90
          2 |      9,530       95.30       97.20
          9 |        280        2.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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