Frequencies for first 10,000 rows of prov2190 variable in pos1995 dataset :

       srv: |
  inpatient |
   surgical |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,933       89.33       89.33
          0 |        370        3.70       93.03
          1 |        659        6.59       99.62
          2 |         28        0.28       99.90
          3 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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