Frequencies for first 10,000 rows of op_srvc_cd variable in pos2018 dataset :

  Services: |
 Outpatient |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,560       85.60       85.60
          0 |        340        3.40       89.00
          1 |        916        9.16       98.16
          2 |         45        0.45       98.61
          3 |        139        1.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Feb 2019