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

  Did your ED go on ambulance diversion |
                               in 2012? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
                                  Blank |         98        0.98        0.98
                                Unknown |        719        7.19        8.17
Hospitals ED went on ambulance diversio |      5,384       53.84       62.01
Hospitals ED did not go on diversion in |      3,799       37.99      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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