Frequencies for first 10,000 rows of prov1505 variable in pos1993 dataset :

 registered |
   nurses - |
  volunteer |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,954       99.54       99.54
        .25 |         15        0.15       99.69
         .5 |          3        0.03       99.72
        .75 |          2        0.02       99.74
          1 |          7        0.07       99.81
          2 |         11        0.11       99.92
          3 |          4        0.04       99.96
        3.5 |          1        0.01       99.97
          4 |          1        0.01       99.98
          8 |          1        0.01       99.99
         15 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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