Frequencies for first 10,000 rows of obsunit variable in nhamcsed2009 dataset :

  does your |
  ed have a |
 physically |
   separate |
observation |
or clinical |
   decision |
      unit? |      Freq.     Percent        Cum.
------------+-----------------------------------
         -8 |         81        0.81        0.81
          1 |      2,742       27.42       28.23
          2 |      7,177       71.77      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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