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

Recode of ECQME for trending |
     with data prior to 2010 |      Freq.     Percent        Cum.
-----------------------------+-----------------------------------
                       Blank |         57        0.57        0.57
                     Unknown |        748        7.48        8.05
                         Yes |      7,988       79.88       87.93
                          No |      1,010       10.10       98.03
Yes, but turned off/not used |        197        1.97      100.00
-----------------------------+-----------------------------------
                       Total |     10,000      100.00

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