Frequencies for first 10,000 rows of rdlgy_srvc_cd variable in pos2010 dataset :

       SRV: |
  RADIOLOGY |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,632       96.32       96.32
          1 |         75        0.75       97.07
          2 |        274        2.74       99.81
          3 |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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