Frequencies for first 10,000 rows of edinfo variable in nhamcsed2015 dataset :

       When |
   patients |
  arrive at |
the ED, are |
you able to |
  query for |
  patients' |
 healthcare |
          i |      Freq.     Percent        Cum.
------------+-----------------------------------
      Blank |         57        0.57        0.57
    Unknown |        868        8.68        9.25
        Yes |      5,504       55.04       64.29
         No |      3,571       35.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017