Frequencies for impact1 variable in person dataset :

    INITIAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         24        2.23        2.23
          1 |         63        5.85        8.08
          2 |          6        0.56        8.64
          3 |         93        8.64       17.27
          5 |          4        0.37       17.64
          6 |         31        2.88       20.52
          7 |         15        1.39       21.91
          8 |          2        0.19       22.10
          9 |         69        6.41       28.51
         10 |         64        5.94       34.45
         11 |         42        3.90       38.35
         12 |        469       43.55       81.89
         13 |          2        0.19       82.08
          . |        193       17.92      100.00
------------+-----------------------------------
      Total |      1,077      100.00

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