Frequencies for first 10,000 rows of dgnstc_rdlgy_srvc_cd variable in pos2000 dataset :

       srv: |
  radiology |
(therapeuti |
         c) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,871       88.71       88.71
          0 |        719        7.19       95.90
          1 |        236        2.36       98.26
          2 |        150        1.50       99.76
          3 |         24        0.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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