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

   if yes, are |
   orders sent |
electronically |
             ? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        283        2.83        2.83
not applicable |      4,611       46.11       48.94
           yes |      4,536       45.36       94.30
            no |        570        5.70      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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