Frequencies for first 10,000 rows of epubhtho variable in nhamcsopd2005 dataset :

   does emr |
     system |
    include |
     public |
     health |
 reporting? |      Freq.     Percent        Cum.
------------+-----------------------------------
        yes |      2,098       20.98       20.98
         no |      2,158       21.58       42.56
    unknown |      1,221       12.21       54.77
      blank |      4,523       45.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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