Frequencies for first 10,000 rows of ip_srgcl_srvc_cd variable in pos1994 dataset :

       srv: |
  inpatient |
   surgical |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,940       89.40       89.40
          0 |        364        3.64       93.04
          1 |        657        6.57       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 , 17 May 2017