Frequencies for first 10,000 rows of rdlgy_srvc_cd variable in pos2016 dataset :

  Ancillary |
  Services: |
  Radiology |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      9,575       95.75       95.75
          1 |         88        0.88       96.63
          2 |        309        3.09       99.72
          3 |         28        0.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 10 Jan 2017