Frequencies for first 10,000 rows of prov2270 variable in pos1991 dataset :

       srv: |
occupationa |
  l therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      4,383       43.83       43.83
          0 |      1,625       16.25       60.08
          1 |      1,798       17.98       78.06
          2 |        956        9.56       87.62
          3 |        120        1.20       88.82
          4 |         86        0.86       89.68
          5 |        922        9.22       98.90
          6 |          8        0.08       98.98
          7 |        102        1.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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