Frequencies for first 10,000 rows of prov2190 variable in pos1993 dataset :

       srv: |
  inpatient |
   surgical |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,856       88.56       88.56
          0 |        374        3.74       92.30
          1 |        731        7.31       99.61
          2 |         29        0.29       99.90
          3 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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