2012-2013

2012-2014

2012-2015

2012-2016

Effect

DF

Wald ChiSq

Pr > ChiSq

Wald ChiSq

Pr > ChiSq

Wald ChiSq

Pr > ChiSq

Wald ChiSq

Pr > ChiSq

Vehicle Type

2

9.3692

0.0092

11.2742

0.0036

13.2448

0.0013

16.9144

0.0002

Driver Gender

1

10.3672

0.0013

12.5182

0.0004

19.3154

<0.0001

24.8218

<0.0001

Driver Cell Phone Use

1

-

-

3.1076

0.0779

3.5323

0.0602

3.7706

0.0522

Passenger Present

1

2.1891

0.1390

2.9222

0.0874

4.2446

0.0394

4.4189

0.0355