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

Table 1

Contingency table of presumed predictors that can affect the CO emissions test results.

Symbol of predictor	TA	OR	VA	ED	EP	SFS	K
TA	1	−0.413^a	0.074^a	−0.767^a	−0.703^a	0.590^a	0.557^a
OR		1	0.512^a	0.511^a	0.451^a	−0.129^a	0.022^a
VA			1	−0.049^b	−0.140^b	0.427^a	0.519^a
ED				1	0.899^a	−0.594^a	−0.461^a
EP					1	−0.615^a	−0.475^a
SFS						1	0.792^a
K							1

Notes: value ≤ 0.01; value ≤ 0.05; TA: territorial affiliation; OR: odometer readings; VA: Vehicle age; ED: engine displacement; EP: engine power; SFS: system of fuel supply; K: catalytic converter (CAT).