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

         Does your ED have a |
     computerized system for |
   recording patient smoking |
                     status? |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |        238        2.38        2.38
         Yes, used routinely |      8,226       82.26       84.64
 Yes, but NOT used routinely |        709        7.09       91.73
                          No |        827        8.27      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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