Frequencies for first 10,000 rows of prov2190 variable in pos1998 dataset :

       srv: |
  inpatient |
   surgical |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,805       88.05       88.05
          0 |        386        3.86       91.91
          1 |        758        7.58       99.49
          2 |         34        0.34       99.83
          3 |         17        0.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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