Frequencies for first 10,000 rows of op_srgry_unit_srvc_cd variable in pos2011 dataset :

   Services |
  Provided: |
 Outpatient |
    Surgery |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,614       86.14       86.14
          0 |        609        6.09       92.23
          1 |        701        7.01       99.24
          2 |         38        0.38       99.62
          3 |         38        0.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Apr 2019