Frequencies for first 10,000 rows of epnotese variable in nhamcsed2009 dataset :

    does ed |
       have |
computerize |
   d system |
        for |
   clinical |
     notes? |      Freq.     Percent        Cum.
------------+-----------------------------------
         -8 |         81        0.81        0.81
          1 |      8,073       80.73       81.54
          2 |      1,846       18.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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