Frequencies for first 10,000 rows of regdiv variable in nhamcsed2012 dataset :

  Is ambulance |
     diversion |
      actively |
  managed on a |
regional level |
   versus each |
      hospital |      Freq.     Percent        Cum.
---------------+-----------------------------------
         Blank |        152        1.52        1.52
       Unknown |        450        4.50        6.02
Not applicable |      5,863       58.63       64.65
           Yes |      2,012       20.12       84.77
            No |      1,523       15.23      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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