Frequencies for first 10,000 rows of prprvtr variable in namcs2015 dataset :

 Percent of |
    patient |
       care |
    revenue |
       from |
    private |
  insurance |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      1,531       15.31       15.31
          1 |      2,343       23.43       38.74
          2 |      3,202       32.02       70.76
          3 |      2,154       21.54       92.30
          4 |        770        7.70      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 25 Oct 2017