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

 episode of |
       care |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |        230        2.30        2.30
         -8 |        683        6.83        9.13
          1 |      8,333       83.33       92.46
          2 |        754        7.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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