Frequencies for first 10,000 rows of ewarne variable in nhamcsed2015 dataset :

  If computerized capability |
 for ordering prescriptions, |
   are warnings of drug inte |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                       Blank |         57        0.57        0.57
                     Unknown |        497        4.97        5.54
              Not applicable |        738        7.38       12.92
         Yes, used routinely |      8,347       83.47       96.39
 Yes, but NOT used routinely |        140        1.40       97.79
                          No |        221        2.21      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017