Frequencies for first 10,000 rows of prprvtr variable in namcs2005 dataset :

 percent of |
    patient |
       care |
    revenue |
       from |
    private |
  insurance |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,717       17.17       17.17
          2 |      3,184       31.84       49.01
          3 |      2,467       24.67       73.68
          4 |      2,010       20.10       93.78
          9 |        622        6.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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