Frequencies for first 10,000 rows of primcare variable in namcs2010 dataset :

    are you |
  patient’s |
    primary |
       care |
 physician? |      Freq.     Percent        Cum.
------------+-----------------------------------
      blank |         98        0.98        0.98
    unknown |        361        3.61        4.59
        yes |      7,482       74.82       79.41
         no |      2,059       20.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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