Frequencies for first 10,000 rows of prov2500 variable in pos1996 dataset :

       srv: |
   physical |
therapy/spe |
   ech path |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,486       94.86       94.86
          1 |        245        2.45       97.31
          2 |         71        0.71       98.02
          3 |        196        1.96       99.98
          4 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017