Frequencies for first 10,000 rows of prov2385 variable in pos1993 dataset :

       srv: |
  physician |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,728       97.28       97.28
          1 |        237        2.37       99.65
          2 |         16        0.16       99.81
          3 |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016