Frequencies for first 10,000 rows of ambtransfer variable in nhamcsed2014 dataset :

       Was the |
       patient |
   transferred |
  from another |
   hospital or |
   urgent care |
     facility? |      Freq.     Percent        Cum.
---------------+-----------------------------------
         Blank |        190        1.90        1.90
       Unknown |        146        1.46        3.36
Not applicable |      8,303       83.03       86.39
           Yes |         63        0.63       87.02
            No |      1,298       12.98      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017