Frequencies for first 10,000 rows of prmanr variable in namcs2003 dataset :

 percent of |
   pat care |
    revenue |
       from |
    managed |
       care |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      2,385       23.85       23.85
          2 |      2,457       24.57       48.42
          3 |      1,889       18.89       67.31
          4 |      1,502       15.02       82.33
          9 |      1,767       17.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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