Frequencies for first 10,000 rows of physn_srvc_cd variable in pos2011 dataset :

   Service: |
  Physician |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,200       92.00       92.00
          1 |        508        5.08       97.08
          2 |        212        2.12       99.20
          3 |         80        0.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Apr 2019