Frequencies for first 10,000 rows of prov2410 variable in pos1991 dataset :

       srv: |
postoperati |
ve recovery |
       room |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,770       87.70       87.70
          0 |        290        2.90       90.60
          1 |        902        9.02       99.62
          2 |         37        0.37       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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