Frequencies for first 10,000 rows of esmoke variable in namcs2012 dataset :

          Does practice have |
    computerized capability: |
   recording patient smoking |
                      status |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |        159        1.59        1.59
         Yes, used routinely |      6,164       61.64       63.23
 Yes, but NOT used routinely |        330        3.30       66.53
Yes, but turned off/not used |        296        2.96       69.49
                          No |      3,051       30.51      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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