Frequencies for first 10,000 rows of prov2500 variable in pos1992 dataset :

       srv: |
   physical |
therapy/spe |
   ech path |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,691       96.91       96.91
          1 |        133        1.33       98.24
          2 |         57        0.57       98.81
          3 |        118        1.18       99.99
          4 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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