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

      does emr |
system include |
      clinical |
        notes? |      Freq.     Percent        Cum.
---------------+-----------------------------------
           yes |      2,487       24.87       24.87
            no |        487        4.87       29.74
    turned off |         34        0.34       30.08
not applicable |      6,889       68.89       98.97
         blank |        103        1.03      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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