Frequencies for first 10,000 rows of prov2190 variable in pos1999 dataset :

       srv: |
  inpatient |
   surgical |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,885       88.85       88.85
          0 |        377        3.77       92.62
          1 |        693        6.93       99.55
          2 |         31        0.31       99.86
          3 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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