Frequencies for first 10,000 rows of prov2385 variable in pos1992 dataset :

       srv: |
  physician |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,763       97.63       97.63
          1 |        203        2.03       99.66
          2 |         14        0.14       99.80
          3 |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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