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

         Does your ED have a |
     computerized system for |
  providing warnings of drug |
                   interacti |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |        390        3.90        3.90
              Not applicable |      1,638       16.38       20.28
         Yes, used routinely |      7,691       76.91       97.19
 Yes, but NOT used routinely |        215        2.15       99.34
                          No |         66        0.66      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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