Frequencies for first 10,000 rows of ewhounke variable in nhamcsed2011 dataset :

At your ED, |
  if orders |
        for |
 prescr/lab |
      tests |
  submitted |
electronica |
   lly, who |
    submits |      Freq.     Percent        Cum.
------------+-----------------------------------
      Blank |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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