Frequencies for first 10,000 rows of primcare variable in namcs2007 dataset :

    are you |
  patient’s |
    primary |
       care |
 physician? |      Freq.     Percent        Cum.
------------+-----------------------------------
      blank |        182        1.82        1.82
    unknown |        512        5.12        6.94
        yes |      7,409       74.09       81.03
         no |      1,897       18.97      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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