Frequencies for first 10,000 rows of esmoker variable in namcs2013 dataset :

          Does practice have |
    computerized capability: |
   recording patient smoking |
                  status - R |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |        107        1.07        1.07
           Refused to answer |         16        0.16        1.23
                         Yes |      7,754       77.54       78.77
                          No |      1,949       19.49       98.26
Yes, but turned off/not used |        174        1.74      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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