Frequencies for first 10,000 rows of primcare variable in namcs2009 dataset :

    are you |
  patient’s |
    primary |
       care |
 physician? |      Freq.     Percent        Cum.
------------+-----------------------------------
      blank |        145        1.45        1.45
    unknown |        438        4.38        5.83
        yes |      7,684       76.84       82.67
         no |      1,733       17.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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