Frequencies for first 10,000 rows of physn_2_srvc_cd variable in pos2010 dataset :

       SRV: |
  PHYSICIAN |
         #2 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,999       99.99       99.99
          2 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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