Frequencies for first 10,000 rows of epubhthe variable in nhamcsed2006 dataset :

      does emr |
system include |
 public health |
    reporting? |      Freq.     Percent        Cum.
---------------+-----------------------------------
           yes |      2,047       20.47       20.47
            no |      2,141       21.41       41.88
       unknown |      1,313       13.13       55.01
         blank |      4,499       44.99      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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