Frequencies for first 10,000 rows of dgnstc_rdlgy_srvc_cd variable in pos2003 dataset :

       srv: |
  radiology |
(therapeuti |
         c) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,789       87.89       87.89
          0 |        772        7.72       95.61
          1 |        249        2.49       98.10
          2 |        150        1.50       99.60
          3 |         40        0.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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