Frequencies for first 10,000 rows of share variable in nhamcsopd2002 dataset :

   do other |
 physicians |
 share care |
        for |
   problem? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        323        3.23        3.23
          1 |      3,345       33.45       36.68
          2 |      3,346       33.46       70.14
          3 |      2,986       29.86      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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