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

  Services: |
 Diagnostic |
  Radiology |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,560       85.60       85.60
          0 |         67        0.67       86.27
          1 |        865        8.65       94.92
          2 |        277        2.77       97.69
          3 |        231        2.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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