Frequencies for first 10,000 rows of dgnstc_rdlgy_srvc_cd variable in pos2007 dataset :

       srv: |
  radiology |
(therapeuti |
         c) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,682       86.82       86.82
          0 |        851        8.51       95.33
          1 |        267        2.67       98.00
          2 |        155        1.55       99.55
          3 |         45        0.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017