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

        Recode of EWARNE for |
 trending with data prior to |
                        2010 |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                     Unknown |        390        3.90        3.90
              Not applicable |      1,638       16.38       20.28
                         Yes |      7,906       79.06       99.34
                          No |         66        0.66      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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