Frequencies for first 10,000 rows of transfer variable in nhamcsed2007 dataset :

transfer to |
  different |
   hospital |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,825       98.25       98.25
        yes |        175        1.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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