Frequencies for first 10,000 rows of preventiveservicesprovidedat variable in planreport2009 dataset :

 Preventive |
   Services |
Provided at |
  Zero Cost |
      Share |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,544       95.44       95.44
        Yes |        456        4.56      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 14 Apr 2016