Frequencies for first 10,000 rows of regdiv variable in nhamcsed2013 dataset :

  Is ambulance |
     diversion |
      actively |
  managed on a |
regional level |
   versus each |
      hospital |      Freq.     Percent        Cum.
---------------+-----------------------------------
         Blank |         98        0.98        0.98
       Unknown |        256        2.56        3.54
Not applicable |      4,518       45.18       48.72
           Yes |      3,876       38.76       87.48
            No |      1,252       12.52      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016