Frequencies for first 10,000 rows of prov2190 variable in pos2006 dataset :

       srv: |
   surgical |
services-in |
    patient |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,710       87.10       87.10
          0 |        437        4.37       91.47
          1 |        791        7.91       99.38
          2 |         37        0.37       99.75
          3 |         25        0.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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