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

   Admit to |
observation |
 unit, then |
hospitalize |
          d |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,926       99.26       99.26
        Yes |         74        0.74      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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