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

   how many |
    managed |
       care |
  contracts |
  does this |
   practice |
      have? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        158        1.58        1.58
          1 |        612        6.12        7.70
          2 |        837        8.37       16.07
          3 |      4,137       41.37       57.44
          4 |      4,256       42.56      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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