Frequencies for first 10,000 rows of regdiv variable in nhamcsed2010 dataset :

  Is ambulance |
     diversion |
      actively |
  managed on a |
regional level |
   versus each |
      hospital |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |         40        0.40        0.40
       unknown |        139        1.39        1.79
not applicable |      5,177       51.77       53.56
           yes |      2,424       24.24       77.80
            no |      2,220       22.20      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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