Frequencies for first 10,000 rows of prmanr variable in namcs2014 dataset :

       Percent of |
     patient care |
     revenue from |
     managed care |
        contracts |      Freq.     Percent        Cum.
------------------+-----------------------------------
          Unknown |      1,150       11.50       11.50
Refused to answer |        332        3.32       14.82
     0-25 percent |      4,430       44.30       59.12
    26-50 percent |      1,730       17.30       76.42
    51-75 percent |        920        9.20       85.62
   76-100 percent |      1,438       14.38      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Mar 2017