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

  When orders for |
    lab tests are |
        submitted |
  electronically, |
    submitted by: |
       prescribin |      Freq.     Percent        Cum.
------------------+-----------------------------------
   Not applicable |      5,394       53.94       53.94
Box is not marked |        994        9.94       63.88
    Box is marked |      3,612       36.12      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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