Frequencies for first 10,000 rows of eordere variable in nhamcsed2007 dataset :

   if yes, are |
   orders sent |
electronically |
             ? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        172        1.72        1.72
       unknown |        106        1.06        2.78
not applicable |      1,913       19.13       21.91
           yes |      6,999       69.99       91.90
            no |        810        8.10      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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