Summary statistics for acc_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     39,836        1990           0       1990       1990
       state |     39,836    27.15024    16.10293          1         56
      county |     39,836    85.21907    90.89615          0        997
      fatals |     39,836    1.119565    .4184016          1         10
     st_case |     39,836    272346.3    160799.9      10001     560107
-------------+---------------------------------------------------------
    a_crainj |     39,836           1           0          1          1
    a_region |     39,836    5.289161    2.468205          1         10
        a_ru |     39,836    1.438172    .4975834          1          3
     a_inter |     39,836    1.894266    .3115552          1          3
     a_relrd |     39,836    2.108269    1.418981          1          6
-------------+---------------------------------------------------------
    a_intsec |     39,836     1.78788    .4107135          1          3
    a_roadfc |     39,836    3.942891    1.515818          1          7
      a_junc |     39,836    1.835676    .4858313          1          4
    a_mancol |     39,836    1.951275    1.291546          1          7
        a_rd |     39,836           3           0          3          3
-------------+---------------------------------------------------------
       a_tod |     39,836    1.565494    .5116964          1          3
       a_dow |     39,836    1.450798    .5019996          1          3
        a_hr |     39,836    1.956321    .2043827          1          2
        a_ct |     39,836    1.468772    .6030372          1          3
        a_lt |     39,836    1.886585    .3171034          1          2
-------------+---------------------------------------------------------
        a_mc |     39,836    1.919746    .2716895          1          2
     a_spcra |     39,836     1.67813    .4671992          1          2
       a_ped |     39,836    1.838362    .3681228          1          2
     a_pedal |     39,836    1.978186    .1460791          1          2
      a_roll |     39,836    1.751833    .4319549          1          2
-------------+---------------------------------------------------------
    a_polpur |     39,836    1.993122    .0826502          1          2
    a_posbac |     39,836    2.181218    .8990293          1          3
    a_d15_19 |     39,836    1.829074    .3764488          1          2
    a_d16_19 |     39,836    1.834421    .3717068          1          2
    a_d15_20 |     39,836    1.782885    .4122868          1          2
-------------+---------------------------------------------------------
    a_d16_20 |     39,836    1.788156    .4086197          1          2
    a_d65pls |     39,836    1.868235    .3382396          1          2
    a_d21_24 |     39,836    1.826112    .3790179          1          2
    a_d16_24 |     39,836    1.629079    .4830574          1          2
      a_dist |     39,836    1.895722    .3056241          1          2
-------------+---------------------------------------------------------
    a_drowsy |     39,836    1.964279    .1855971          1          2

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