Frequencies for first 10,000 rows of edemog variable in namcs2006 dataset :

      does emr |
system include |
       patient |
   demographic |
         info? |      Freq.     Percent        Cum.
---------------+-----------------------------------
           yes |      2,832       28.32       28.32
            no |        186        1.86       30.18
not applicable |      6,889       68.89       99.07
         blank |         93        0.93      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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