Frequencies for first 10,000 rows of prov2455 variable in pos1999 dataset :

       srv: |
respiratory |
       care |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,817       88.17       88.17
          0 |        267        2.67       90.84
          1 |        752        7.52       98.36
          2 |        137        1.37       99.73
          3 |         27        0.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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