Identifying the Factors Contributing to Injury Severity in Work Zone Rear-End Crashes

Table 3

Marginal effects associated with the random-parameters model.

Variable	Marginal Effects
	(Random-parameters model)
	No injury	Injury	Fatal
Young	-0.1710	0.1085	0.5048
Male	-0.0994	0.0631	0.2934
Curve	-0.3875	0.2458	1.1438
Heavy	-0.0751	0.0477	0.2218
Passenger	-0.0730	0.0463	0.2155
Weekday	0.2139	-0.1357	-0.6314
Daytime	0.0466	-0.0296	-0.1375
Fog	0.2504	-0.1589	-0.7393
Summer	-0.0835	0.0530	0.2466
Rural	-0.1218	0.0773	0.3594
Speeding	-0.3904	0.2477	1.1525
No. lane closures	-0.1989	0.1262	0.5873
Asphalt	-0.2854	0.1811	0.8424
Milling	0.1062	-0.0674	-0.3135