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

  PRINCIPAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        823        8.23        8.23
          1 |        219        2.19       10.42
          2 |        254        2.54       12.96
          3 |        597        5.97       18.93
          4 |         88        0.88       19.81
          5 |         65        0.65       20.46
          6 |        400        4.00       24.46
          7 |        152        1.52       25.98
          8 |         96        0.96       26.94
          9 |        676        6.76       33.70
         10 |        129        1.29       34.99
         11 |        514        5.14       40.13
         12 |      4,264       42.64       82.77
         13 |        228        2.28       85.05
         14 |        234        2.34       87.39
         99 |        518        5.18       92.57
          . |        743        7.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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