Frequencies for first 10,000 rows of crna_cnt variable in pos1992 dataset :

  certified |
         rn |
anesthetist |
          s |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,796       97.96       97.96
        .25 |          7        0.07       98.03
         .5 |          4        0.04       98.07
          1 |         66        0.66       98.73
        1.2 |          1        0.01       98.74
       1.25 |          1        0.01       98.75
        1.5 |          7        0.07       98.82
       1.75 |          1        0.01       98.83
          2 |         26        0.26       99.09
       2.25 |          1        0.01       99.10
        2.5 |          1        0.01       99.11
       2.75 |          1        0.01       99.12
          3 |         12        0.12       99.24
       3.65 |          1        0.01       99.25
          4 |         10        0.10       99.35
        4.5 |          1        0.01       99.36
        4.6 |          1        0.01       99.37
          5 |          8        0.08       99.45
        5.2 |          1        0.01       99.46
       5.25 |          1        0.01       99.47
          6 |          7        0.07       99.54
        6.5 |          1        0.01       99.55
       6.75 |          3        0.03       99.58
          7 |          3        0.03       99.61
       7.25 |          1        0.01       99.62
        7.5 |          2        0.02       99.64
       7.75 |          1        0.01       99.65
          8 |          4        0.04       99.69
       8.25 |          1        0.01       99.70
       8.75 |          1        0.01       99.71
          9 |          2        0.02       99.73
         10 |          2        0.02       99.75
       11.5 |          2        0.02       99.77
         12 |          2        0.02       99.79
       13.5 |          1        0.01       99.80
         15 |          3        0.03       99.83
         17 |          3        0.03       99.86
       17.5 |          1        0.01       99.87
      17.75 |          1        0.01       99.88
         18 |          1        0.01       99.89
      19.25 |          1        0.01       99.90
         20 |          1        0.01       99.91
         21 |          1        0.01       99.92
         22 |          1        0.01       99.93
      22.25 |          1        0.01       99.94
      23.75 |          1        0.01       99.95
         25 |          1        0.01       99.96
         31 |          1        0.01       99.97
         34 |          1        0.01       99.98
      36.25 |          1        0.01       99.99
         60 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017