Frequencies for first 10,000 rows of obsphysed variable in nhamcsed2012 dataset :

     What type of |
  physician makes |
    decisions for |
 patients in this |
observation unit? |
                - |      Freq.     Percent        Cum.
------------------+-----------------------------------
   Not applicable |      7,487       74.87       74.87
Box is not marked |        892        8.92       83.79
    Box is marked |      1,621       16.21      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 7 Nov 2016