Frequencies for first 10,000 rows of prov2500 variable in pos2004 dataset :

       srv: |
   physical |
therapy/spe |
   ech path |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,367       93.67       93.67
          1 |        331        3.31       96.98
          2 |         68        0.68       97.66
          3 |        228        2.28       99.94
          4 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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