Frequencies for first 10,000 rows of eordero variable in nhamcsopd2007 dataset :

   if yes, are |
   orders sent |
electronically |
             ? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        322        3.22        3.22
       unknown |         68        0.68        3.90
not applicable |      4,341       43.41       47.31
           yes |      4,241       42.41       89.72
            no |      1,028       10.28      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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