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

      did your hospital go on ambulance |
                     diversion in 2006? |      Freq.     Percent        Cum.
----------------------------------------+-----------------------------------
     hospital went on diversion in 2006 |      3,833       38.33       38.33
hospital did not go on diversion in 200 |      3,046       30.46       68.79
           diversion data not available |      3,121       31.21      100.00
----------------------------------------+-----------------------------------
                                  Total |     10,000      100.00

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