Frequencies for first 10,000 rows of nmedcare variable in namcs2009 dataset :

       for new |
     patients, |
       accepts |
      medicare |      Freq.     Percent        Cum.
---------------+-----------------------------------
         blank |        131        1.31        1.31
       unknown |        116        1.16        2.47
not applicable |        620        6.20        8.67
           yes |      7,216       72.16       80.83
            no |      1,917       19.17      100.00
---------------+-----------------------------------
         Total |     10,000      100.00

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