Frequencies for first 10,000 rows of edemoge variable in nhamcsed2006 dataset :

      does emr |
system include |
       patient |
   demographic |
         info? |      Freq.     Percent        Cum.
---------------+-----------------------------------
           yes |      5,451       54.51       54.51
            no |        188        1.88       56.39
       unknown |         92        0.92       57.31
not applicable |      4,164       41.64       98.95
         blank |        105        1.05      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016