Frequencies for first 10,000 rows of ip_srgcl_srvc_cd variable in pos1992 dataset :

       srv: |
  inpatient |
   surgical |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,851       88.51       88.51
          0 |        400        4.00       92.51
          1 |        710        7.10       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