Frequencies for first 10,000 rows of prov0990 variable in pos1991 dataset :

     mental |
     health |
 services - |
  part time |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,976       99.76       99.76
        .01 |          1        0.01       99.77
        .02 |          1        0.01       99.78
        .07 |          1        0.01       99.79
        .14 |          1        0.01       99.80
        .25 |          9        0.09       99.89
        .29 |          1        0.01       99.90
        .45 |          1        0.01       99.91
         .5 |          2        0.02       99.93
        .57 |          1        0.01       99.94
          1 |          2        0.02       99.96
       1.25 |          1        0.01       99.97
       1.75 |          1        0.01       99.98
          2 |          1        0.01       99.99
       7.25 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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