Binary Logistic Regression Modeling of Idle CO Emissions in Order to Estimate Predictors Influences in Old Vehicle Park

Table 2

Adopted predictor for BLR modeling.

Symbol of predictor	Mark of logistic predictor ,	Definition of predictor	Type of predictor	Dummy coding
TA		Territorial Affiliation	(bi)nominal	0 (foreign^a)
				1 (domestic)
OR		Odometer Readings	Discrete	Scale
VA		Vehicle age	Discrete	Scale
EP		Engine power	Categorical interval	0 (≤40 kW)^a
				1 (41–70 kW)
				2 (≥71 kW)
SFS		System of fuel supply	(bi)nominal	0 (injection)
				1 (carburetor)
K		Catalytic converter (CAT)	(bi)nominal	0 (with CAT^a)
				1 (no CAT)

Notes: ^areference subcategory in related category.