Frequencies for first 10,000 rows of eresulto variable in nhamcsopd2006 dataset :

      does emr |
system include |
  lab results? |      Freq.     Percent        Cum.
---------------+-----------------------------------
           Yes |      3,793       37.93       37.93
            No |        161        1.61       39.54
       Unknown |        153        1.53       41.07
    Turned off |        163        1.63       42.70
Not applicable |      5,529       55.29       97.99
         Blank |        201        2.01      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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