Frequencies for first 10,000 rows of prov1485 variable in pos1991 dataset :

home health |
    aides - |
  volunteer |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,983       99.83       99.83
        .25 |          3        0.03       99.86
         .5 |          1        0.01       99.87
        .75 |          1        0.01       99.88
          1 |          5        0.05       99.93
          2 |          3        0.03       99.96
          3 |          1        0.01       99.97
          5 |          1        0.01       99.98
          8 |          1        0.01       99.99
        250 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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