Frequencies for first 10,000 rows of admtphys variable in nhamcsed2014 dataset :

      Admitting |
      physician |      Freq.     Percent        Cum.
----------------+-----------------------------------
          Blank |          8        0.08        0.08
        Unknown |        411        4.11        4.19
 Not applicable |      8,984       89.84       94.03
    Hospitalist |        483        4.83       98.86
Not hospitalist |        114        1.14      100.00
----------------+-----------------------------------
          Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 11 Apr 2017