Frequencies for first 10,000 rows of eradie variable in nhamcsed2014 dataset :

         Does your ED have a |
     computerized system for |
    ordering radiology tests |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |        455        4.55        4.55
         Yes, used routinely |      9,095       90.95       95.50
Yes, but turned off/not used |        117        1.17       96.67
                          No |        333        3.33      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017