Frequencies for first 10,000 rows of prov1150 variable in pos2002 dataset :

 registered |
    nurse - |
   contract |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,868       98.68       98.68
        .06 |          1        0.01       98.69
        .11 |         16        0.16       98.85
        .17 |          3        0.03       98.88
        .23 |          8        0.08       98.96
        .24 |          1        0.01       98.97
        .25 |          1        0.01       98.98
        .26 |          1        0.01       98.99
        .34 |          3        0.03       99.02
        .36 |          1        0.01       99.03
        .41 |          1        0.01       99.04
        .43 |          2        0.02       99.06
        .46 |          7        0.07       99.13
        .49 |          1        0.01       99.14
         .5 |          1        0.01       99.15
        .57 |          7        0.07       99.22
        .69 |          1        0.01       99.23
         .8 |          1        0.01       99.24
        .84 |          1        0.01       99.25
        .86 |          1        0.01       99.26
        .91 |          5        0.05       99.31
        .94 |          2        0.02       99.33
       1.03 |          1        0.01       99.34
       1.07 |          2        0.02       99.36
       1.09 |          4        0.04       99.40
       1.11 |          1        0.01       99.41
       1.14 |          3        0.03       99.44
       1.19 |          1        0.01       99.45
        1.2 |          1        0.01       99.46
       1.26 |          5        0.05       99.51
       1.29 |          1        0.01       99.52
       1.34 |          1        0.01       99.53
       1.37 |          5        0.05       99.58
       1.39 |          1        0.01       99.59
       1.49 |          2        0.02       99.61
        1.5 |          1        0.01       99.62
        1.6 |          1        0.01       99.63
       1.61 |          1        0.01       99.64
       1.63 |          1        0.01       99.65
        1.7 |          1        0.01       99.66
       1.71 |          1        0.01       99.67
       1.86 |          2        0.02       99.69
       1.94 |          1        0.01       99.70
          2 |          1        0.01       99.71
       2.27 |          1        0.01       99.72
       2.29 |          4        0.04       99.76
       2.34 |          1        0.01       99.77
        2.4 |          1        0.01       99.78
       2.44 |          1        0.01       99.79
       2.51 |          1        0.01       99.80
       2.67 |          1        0.01       99.81
       2.69 |          1        0.01       99.82
       2.74 |          1        0.01       99.83
       2.86 |          1        0.01       99.84
       2.97 |          2        0.02       99.86
       3.26 |          1        0.01       99.87
       3.31 |          3        0.03       99.90
       3.49 |          1        0.01       99.91
          4 |          1        0.01       99.92
       4.34 |          1        0.01       99.93
       4.91 |          2        0.02       99.95
       6.43 |          1        0.01       99.96
       6.46 |          1        0.01       99.97
       6.51 |          1        0.01       99.98
       8.24 |          1        0.01       99.99
      22.13 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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