Summary statistics for acc_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     39,252        2005           0       2005       2005
       state |     39,252    27.13737    16.17174          1         56
      county |     39,252    87.42581    89.64117          0        999
      fatals |     39,252    1.108479    .4108072          1         23
     st_case |     39,252    272161.4    161557.1      10001     560147
-------------+---------------------------------------------------------
    a_crainj |     39,252           1           0          1          1
    a_region |     39,252    5.317895    2.373343          1         10
        a_ru |     39,252    1.454168    .5116798          1          3
     a_inter |     39,252    1.882375    .3610246          1          3
     a_relrd |     39,252    2.130898    1.392295          1          6
-------------+---------------------------------------------------------
    a_intsec |     39,252    1.780572    .4200967          1          3
    a_roadfc |     39,252    3.914068    1.623808          1          7
      a_junc |     39,252    1.839244    .5120053          1          4
    a_mancol |     39,252    2.036304    1.374818          1          7
       a_tod |     39,252    1.519082    .5152068          1          3
-------------+---------------------------------------------------------
       a_dow |     39,252    1.422322    .4985051          1          3
        a_hr |     39,252    1.955697    .2057711          1          2
        a_ct |     39,252    1.489631    .6202197          1          3
        a_lt |     39,252    1.884057    .3201608          1          2
        a_mc |     39,252    1.884974    .3190574          1          2
-------------+---------------------------------------------------------
     a_spcra |     39,252    1.693697    .4609629          1          2
       a_ped |     39,252    1.875471    .3301879          1          2
     a_pedal |     39,252     1.97995    .1401729          1          2
      a_roll |     39,252    1.710919    .4533413          1          2
    a_polpur |     39,252    1.991899    .0896441          1          2
-------------+---------------------------------------------------------
    a_posbac |     39,252    2.308851    .8434701          1          3
    a_d15_19 |     39,252    1.856364    .3507247          1          2
    a_d16_19 |     39,252    1.860415    .3465606          1          2
    a_d15_20 |     39,252    1.817563    .3862088          1          2
    a_d16_20 |     39,252    1.821563    .3828849          1          2
-------------+---------------------------------------------------------
    a_d65pls |     39,252    1.849154    .3579031          1          2
    a_d21_24 |     39,252     1.83904    .3674987          1          2
    a_d16_24 |     39,252    1.672119    .4694473          1          2
        a_rd |     39,252      1.4813    .4996566          1          2
      a_dist |     39,252    1.897432    .3033977          1          2
-------------+---------------------------------------------------------
    a_drowsy |     39,252    1.973683    .1600787          1          2

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