Frequencies for first 10,000 rows of prov2190 variable in pos2004 dataset :

       srv: |
  inpatient |
   surgical |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,766       87.66       87.66
          0 |        425        4.25       91.91
          1 |        747        7.47       99.38
          2 |         40        0.40       99.78
          3 |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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