Frequencies for first 10,000 rows of emedrec variable in namcs2003 dataset :

       does |
   practice |
        use |
 electronic |
    medical |
   records? |      Freq.     Percent        Cum.
------------+-----------------------------------
      Blank |         63        0.63        0.63
        Yes |      1,795       17.95       18.58
         No |      7,999       79.99       98.57
 Don`t know |        143        1.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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