Summary statistics for acc_aux dataset :

by Jean Roth , jroth@nber.org , 22 Apr 2016

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     39,092        1982           0       1982       1982
       state |     39,092    28.14016    15.97389          1         56
      county |     39,092    88.69111    96.14727          1        999
      fatals |     39,092    1.124143     .442739          1         10
     st_case |     39,092    282218.4    159645.6      10001     560174
-------------+---------------------------------------------------------
    a_crainj |     39,092           1           0          1          1
    a_region |     39,092    5.270004    2.446695          1         10
        a_ru |     39,092    1.451346    .5099722          1          3
     a_inter |     39,092    1.919523    .3090982          1          3
     a_relrd |     39,092    2.061522     1.38387          1          6
-------------+---------------------------------------------------------
    a_intsec |     39,092    1.797554     .403733          1          3
    a_roadfc |     39,092    3.986979    1.472005          1          7
      a_junc |     39,092    1.860713    .4992789          1          4
    a_mancol |     39,092    1.892689    1.265247          1          7
        a_rd |     39,092           3           0          3          3
-------------+---------------------------------------------------------
       a_tod |     39,092    1.620357    .4964049          1          3
       a_dow |     39,092    1.463471    .5020445          1          3
        a_hr |     39,092    1.955643    .2058894          1          2
        a_ct |     39,092    1.432544     .575148          1          3
        a_lt |     39,092    1.887547    .3159266          1          2
-------------+---------------------------------------------------------
        a_mc |     39,092    1.888136    .3152035          1          2
     a_spcra |     39,092    1.657142    .4746705          1          2
       a_ped |     39,092    1.814821    .3884473          1          2
     a_pedal |     39,092    1.977412     .148587          1          2
      a_roll |     39,092    1.774455     .417946          1          2
-------------+---------------------------------------------------------
    a_polpur |     39,092    1.993477    .0805027          1          2
    a_posbac |     39,092    2.356723    .8933641          1          3
    a_d15_19 |     39,092    1.813082    .3898507          1          2
    a_d16_19 |     39,092    1.818275    .3856228          1          2
    a_d15_20 |     39,092      1.7577    .4284805          1          2
-------------+---------------------------------------------------------
    a_d16_20 |     39,092    1.762662    .4254563          1          2
    a_d65pls |     39,092    1.904175    .2943552          1          2
    a_d21_24 |     39,092     1.78126    .4133974          1          2
    a_d16_24 |     39,092    1.564489    .4958301          1          2
      a_dist |     39,092    1.910212    .2858817          1          2
-------------+---------------------------------------------------------
    a_drowsy |     39,092    1.968408    .1749139          1          2

by Jean Roth , jroth@nber.org , 22 Apr 2016