Frequencies for first 10,000 rows of esmoker variable in namcs2014 dataset :

          Does practice have |
    computerized capability: |
   recording patient smoking |
                  status - R |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |         12        0.12        0.12
                         Yes |      7,885       78.85       78.97
                          No |      1,984       19.84       98.81
Yes, but turned off/not used |        119        1.19      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017