Frequencies for first 10,000 rows of obsunits variable in nhamcsed2011 dataset :

  Does your |
  ED have a |
 physically |
   separate |
observation |
or clinical |
   decision |
      unit? |      Freq.     Percent        Cum.
------------+-----------------------------------
    Unknown |        443        4.43        4.43
        Yes |      2,211       22.11       26.54
         No |      7,346       73.46      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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