Frequencies for first 10,000 rows of prov2050 variable in pos1991 dataset :

       srv: |
 activities |
    therapy |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,084       70.84       70.84
          0 |        149        1.49       72.33
          1 |      1,099       10.99       83.32
          2 |         48        0.48       83.80
          3 |         18        0.18       83.98
          4 |      1,409       14.09       98.07
          5 |         42        0.42       98.49
          6 |         59        0.59       99.08
          7 |         92        0.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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