Frequencies for first 10,000 rows of prov2270 variable in pos1995 dataset :

       srv: |
occupationa |
  l therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,349       73.49       73.49
          0 |        775        7.75       81.24
          1 |        752        7.52       88.76
          2 |        921        9.21       97.97
          3 |        203        2.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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