Frequencies for first 10,000 rows of ewhounkp variable in namcs2012 dataset :

  When orders for |
prescriptions are |
        submitted |
  electronically, |
    submitted by: |
           unknow |      Freq.     Percent        Cum.
------------------+-----------------------------------
   Not applicable |      3,501       35.01       35.01
Box is not marked |      6,459       64.59       99.60
    Box is marked |         40        0.40      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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