Bureau of Transportation Statistics (BTS)
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Table 5
FGLS Regression: Involved Drivers in Injury and PDO Crashes, ≥ 601

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Variable Total crashes
(a)
Fatal crashes
(b)
Coeff z-stat Coeff z-stat
Rpcinc –6.00E-04 –1.39 4.59E-04 1.39
Cpigas –0.128 –2.99 –0.124 –3.39
Cpialc –0.190 –4.72 0.015 0.41
Uerate –9.786 –0.88 9.707 1.07
Vmtge60 1.89E-07 3.95
Vmtlt60 2.55E-08 3.30
Totvmt 4.15E-08 6.53
Popden –8.07E-03 –0.26 –0.189 –3.79
Pctge60 67.756 2.00 72.219 2.55
Alclic 9.14E-03 5.51 9.88E-03 3.36
AB541 0.369 0.33 –2.147 –2.17
APS 6.513 4.19 –3.329 –2.27
Slmt_65 1.616 1.49 1.439 1.39
Slmt_70 1.388 1.38 1.317 1.37
Pc_dui 10.984 0.42 45.035 1.93
Constant 57.206 4.63 76.007 4.74
  ρ range: (-0.261, 0.863)
mean ρ: 0.471
Wald χ2(71) = 47027.8
Prob > χ2(71) = 0.0
ρ range: (-0.179, 0.953)
mean ρ: 0.710
Wald χ2(71) = 12211.8
Prob > χ2(71) = 0.0

1 Estimates of the constant term and fixed effects are not reported for 57 counties, normalizing on the 58th county, Yuba.