Summary statistics for acc_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     38,491        2002           0       2002       2002
       state |     38,491    27.58809    16.15955          1         56
      county |     38,491    89.58071    93.37472          0        999
      fatals |     38,491    1.117274    .4208339          1         14
     st_case |     38,491    276640.1      161496      10001     560151
-------------+---------------------------------------------------------
    a_crainj |     38,491           1           0          1          1
    a_region |     38,491    5.311865    2.375835          1         10
        a_ru |     38,491    1.410849    .4962533          1          3
     a_inter |     38,491    1.879322    .3457215          1          3
     a_relrd |     38,491    2.146943    1.402748          1          6
-------------+---------------------------------------------------------
    a_intsec |     38,491    1.771505    .4248511          1          3
    a_roadfc |     38,491    3.959835    1.615574          1          7
      a_junc |     38,491    1.822712    .5065994          1          4
    a_mancol |     38,491    2.023434    1.363737          1          7
        a_rd |     38,491           3           0          3          3
-------------+---------------------------------------------------------
       a_tod |     38,491    1.524304    .5162472          1          3
       a_dow |     38,491    1.420072     .497561          1          3
        a_hr |     38,491    1.961705    .1919092          1          2
        a_ct |     38,491    1.490504    .6185258          1          3
        a_lt |     38,491     1.89026    .3125694          1          2
-------------+---------------------------------------------------------
        a_mc |     38,491     1.91624    .2770309          1          2
     a_spcra |     38,491    1.685225    .4644322          1          2
       a_ped |     38,491    1.874516    .3312711          1          2
     a_pedal |     38,491    1.982671    .1304948          1          2
      a_roll |     38,491    1.713206    .4522705          1          2
-------------+---------------------------------------------------------
    a_polpur |     38,491    1.991453    .0920577          1          2
    a_posbac |     38,491    2.274064    .8448628          1          3
    a_d15_19 |     38,491     1.83552    .3707154          1          2
    a_d16_19 |     38,491     1.84043    .3662113          1          2
    a_d15_20 |     38,491    1.792991    .4051676          1          2
-------------+---------------------------------------------------------
    a_d16_20 |     38,491    1.797823    .4016288          1          2
    a_d65pls |     38,491    1.844717     .362179          1          2
    a_d21_24 |     38,491    1.841885    .3648534          1          2
    a_d16_24 |     38,491     1.65236    .4762271          1          2
      a_dist |     38,491    1.888208    .3151149          1          2
-------------+---------------------------------------------------------
    a_drowsy |     38,491    1.967473    .1773975          1          2

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