Frequencies for first 10,000 rows of escrip variable in namcs2009 dataset :

   if yes, are |
 prescriptions |
          sent |
electronically |
     to pharm? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        142        1.42        1.42
       unknown |        158        1.58        3.00
not applicable |      4,888       48.88       51.88
           yes |      4,003       40.03       91.91
            no |        789        7.89       99.80
    turned off |         20        0.20      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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