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

  Does your |
 ED have an |
observation |
or clinical |
   decision |
      unit? |      Freq.     Percent        Cum.
------------+-----------------------------------
      Blank |         98        0.98        0.98
    Unknown |        328        3.28        4.26
        Yes |      4,482       44.82       49.08
         No |      5,092       50.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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