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

       Recode of EVITALE for |
 trending with data prior to |
                        2010 |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |         88        0.88        0.88
                         Yes |      9,474       94.74       95.62
                          No |        438        4.38      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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