Active Smoking Increases Microsomal PGE₂-Synthase-1/PGE-Receptor-4 Axis in Human Abdominal Aortic Aneurysms

Table 3

𝜒² analysis of risk factors.

Variable	COPD	CS	DM	HL	RI
HTN	𝜒^2=1.494	𝜒^2=3.371	𝜒^2=1.801	𝜒^2=0.0318	𝜒^2=4.448
	𝑃=0.222	𝑃=0.066	𝑃=0.180	𝑃=0.859	𝑃=0.035
COPD		𝜒^2=8.464	𝜒^2=0.0006	𝜒^2=0.082	𝜒^2=9.952
		𝑃=0.004	𝑃=0.981	𝑃=0.775	𝑃=0.002
CS			𝜒^2=0.0326	𝜒^2=0.0009	𝜒^2=1.223
			𝑃=0.857	𝑃=0.976	𝑃=0.269
DM				𝜒^2=2.55	𝜒^2=0.04
				𝑃=0.110	𝑃=0.842
HL					𝜒^2=0.003
					𝑃=0.957

HTN: arterial hypertension; COPD: chronic occlusive pulmonary disease; CS: current smoking; DM: diabetes mellitus; HL: hyperlipidemia; RI: renal insufficiency.