Frequencies for first 10,000 rows of prov1360 variable in pos1993 dataset :

 tech super |
          - |
pathologist |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,211       92.11       92.11
          1 |        485        4.85       96.96
          2 |        133        1.33       98.29
          3 |         65        0.65       98.94
          4 |         37        0.37       99.31
          5 |         22        0.22       99.53
          6 |         14        0.14       99.67
          7 |         11        0.11       99.78
          8 |          7        0.07       99.85
          9 |          5        0.05       99.90
         10 |          4        0.04       99.94
         11 |          1        0.01       99.95
         13 |          3        0.03       99.98
         15 |          1        0.01       99.99
         17 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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