Frequencies for first 10,000 rows of prov2385 variable in pos1995 dataset :

       srv: |
  physician |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,676       96.76       96.76
          1 |        285        2.85       99.61
          2 |         17        0.17       99.78
          3 |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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