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

  When orders for |
    lab tests are |
        submitted |
  electronically, |
    submitted by: |
       other prac |      Freq.     Percent        Cum.
------------------+-----------------------------------
   Not applicable |      5,394       53.94       53.94
Box is not marked |      2,602       26.02       79.96
    Box is marked |      2,004       20.04      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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