Frequencies for first 10,000 rows of obsphysun variable in nhamcsed2013 dataset :

     What type of |
  physician makes |
    decisions for |
 patients in this |
observation unit? |
               -  |      Freq.     Percent        Cum.
------------------+-----------------------------------
   Not applicable |      5,420       54.20       54.20
Box is not marked |      4,321       43.21       97.41
    Box is marked |        259        2.59      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

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