Frequencies for first 10,000 rows of escripo variable in nhamcsopd2009 dataset :

   if yes, are |
 prescriptions |
          sent |
electronically |
             ? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        168        1.68        1.68
       unknown |          9        0.09        1.77
not applicable |      5,571       55.71       57.48
           yes |      3,313       33.13       90.61
            no |        939        9.39      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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