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Table 3 Average pseudo-elasticities for the partial proportional odds model

From: Interpreting risk factors for truck crash severity on mountainous freeways in Jiangxi and Shaanxi, China

Explanatory variables PDO Injury Fatality
% p % p % p
Driver characteristics
 Male 2.76 n.s. −1.27 n.s. −1.49 n.s.
 Age
  Adult (30~50 years) −1.03 n.s. 0.47 n.s. 0.55 n.s.
  Old (>  50 years) −5.94 0.008 2.74 0.014 3.21 0.008
 Failure to wear a seatbelt −11.72 <  0.001 9.87 <  0.001 1.85 n.s.
Vehicle attributes
 Multiple vehicles involved −6.96 <  0.001 6.66 0.002 0.29 n.s.
 Commercial transport 13.53 <  0.001 −6.23 0.002 −7.30 <  0.001
 Overloading −14.71 <  0.001 1.13 n.s. 13.58 <  0.001
 Brake Failure −4.84 0.011 6.55 0.006 −1.72 n.s.
 Disregarding speed limit −10.11 <  0.001 −1.70 n.s. 11.81 <  0.001
 Unsafe following distance −10.09 <  0.001 8.90 <  0.001 1.18 n.s.
Road geometrics
 Curve −4.36 0.005 −3.21 n.s. 7.57 <  0.001
 Vertical alignment       
  Upgrade 4.33 n.s. −1.99 n.s. −2.34 n.s.
  Downgrade 15.70 <  0.001 −11.56 <  0.001 −4.14 <  0.001
Environmental conditions
 Season
  Summer −10.23 <  0.001 4.71 <  0.001 5.52 <  0.001
  Autumn 6.80 0.020 −14.73 <  0.001 7.93 0.007
  Winter −11.24 <  0.001 −0.21 n.s. 11.45 <  0.001
 Weekday 3.22 0.021 −1.48 0.030 −1.74 0.022
 Nighttime −10.45 <  0.001 1.35 n.s. 9.09 <  0.001
 Adverse weather −11.01 <  0.001 1.59 n.s. 9.41 <  0.001
  1. n.s. Non-significant