Frequencies for first 10,000 rows of impact2 variable in person dataset :

  PRINCIPAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        842        8.42        8.42
          1 |        447        4.47       12.89
          2 |        191        1.91       14.80
          3 |        726        7.26       22.06
          4 |        127        1.27       23.33
          5 |        102        1.02       24.35
          6 |        382        3.82       28.17
          7 |        137        1.37       29.54
          8 |        135        1.35       30.89
          9 |        701        7.01       37.90
         10 |        142        1.42       39.32
         11 |        612        6.12       45.44
         12 |      4,029       40.29       85.73
         13 |        143        1.43       87.16
         14 |        284        2.84       90.00
         15 |         36        0.36       90.36
         16 |         14        0.14       90.50
         99 |        116        1.16       91.66
          . |        834        8.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016