Frequencies for first 10,000 rows of prov2385 variable in pos1997 dataset :

       srv: |
  physician |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,503       95.03       95.03
          1 |        439        4.39       99.42
          2 |         21        0.21       99.63
          3 |         37        0.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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