Frequencies for impact1 variable in person dataset :

     Impact |
Point-Initi |
         al |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        154       11.65       11.65
          1 |        115        8.70       20.35
          2 |          4        0.30       20.65
          3 |         81        6.13       26.78
          4 |          4        0.30       27.08
          5 |          5        0.38       27.46
          6 |         31        2.34       29.80
          7 |          7        0.53       30.33
          8 |          8        0.61       30.94
          9 |         48        3.63       34.57
         10 |          5        0.38       34.95
         11 |        116        8.77       43.72
         12 |        477       36.08       79.80
         14 |         11        0.83       80.64
          . |        256       19.36      100.00
------------+-----------------------------------
      Total |      1,322      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016