Frequencies for first 10,000 rows of admtphys variable in nhamcsed2010 dataset :

      Admitting |
      physician |      Freq.     Percent        Cum.
----------------+-----------------------------------
          blank |         67        0.67        0.67
 not applicable |      8,645       86.45       87.12
    hospitalist |        513        5.13       92.25
not hospitalist |        421        4.21       96.46
        unknown |        354        3.54      100.00
----------------+-----------------------------------
          Total |     10,000      100.00

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