Frequencies for first 10,000 rows of dgnstc_rdlgy_srvc_cd variable in pos2005 dataset :

       srv: |
  radiology |
(therapeuti |
         c) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,731       87.31       87.31
          0 |        808        8.08       95.39
          1 |        262        2.62       98.01
          2 |        156        1.56       99.57
          3 |         43        0.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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