Frequencies for first 10,000 rows of admitobs variable in nhamcsed2008 dataset :

   admit to |
observation |
       unit |      Freq.     Percent        Cum.
------------+-----------------------------------
         no |      9,785       97.85       97.85
        yes |        215        2.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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