Frequencies for first 10,000 rows of healthed variable in nhamcsopd2011 dataset :

       Was health |
education ordered |
     or provided? |      Freq.     Percent        Cum.
------------------+-----------------------------------
               No |      3,917       39.17       39.17
              Yes |      5,932       59.32       98.49
Entire item blank |        151        1.51      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016