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

       Recode of ESMOKEE for |
 trending with data prior to |
                        2010 |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                       Blank |         57        0.57        0.57
                     Unknown |         72        0.72        1.29
                         Yes |      9,713       97.13       98.42
                          No |        158        1.58      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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