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

are you the |
  patient's |
    primary |
       care |
 physician? |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        153        1.53        1.53
          1 |      3,003       30.03       31.56
          2 |      6,163       61.63       93.19
          3 |        681        6.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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