Frequencies for first 10,000 rows of obshos variable in nhamcsed2015 dataset :

   Admit to |
observation |
 unit, then |
hospitalize |
          d |      Freq.     Percent        Cum.
------------+-----------------------------------
         No |      9,992       99.92       99.92
        Yes |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Nov 2017