Do Expressway Interchanges Increase Crash Injury Severities? Insights Using Temporal Instability and Unobserved Heterogeneity

Table 7

NAIC model is used to predict the probability difference of AIC data.

Year	NAIC model to predict AIC data
	No injury	Minor injury	Severe injury
2017	0.0129	−0.0143	0.0014
2018	0.0126	−0.0054	−0.0072
2019	0.0174	−0.0156	−0.0018