Frequencies for first 10,000 rows of prov2455 variable in pos2006 dataset :

       srv: |
respiratory |
       care |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,573       85.73       85.73
          0 |        336        3.36       89.09
          1 |        922        9.22       98.31
          2 |        137        1.37       99.68
          3 |         32        0.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016