Frequencies for first 10,000 rows of ip_srgcl_srvc_cd variable in pos1996 dataset :

       srv: |
  inpatient |
   surgical |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,803       88.03       88.03
          0 |        404        4.04       92.07
          1 |        743        7.43       99.50
          2 |         37        0.37       99.87
          3 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017