Frequencies for first 10,000 rows of op_srgry_unit_srvc_cd variable in pos2017 

  Services: |
 Outpatient |
    Surgery |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,569       85.69       85.69
          0 |        623        6.23       91.92
          1 |        691        6.91       98.83
          2 |         36        0.36       99.19
          3 |         81        0.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 9 Jan 2018