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. Author manuscript; available in PMC: 2009 Nov 26.

Published in final edited form as: Atherosclerosis. 2008 Mar 4;201(1):217–224. doi: 10.1016/j.atherosclerosis.2007.12.058

Table 4.

Significant interactions: estimated geometric means (95% CI) of inflammatory markers by smoking category and clinical variable

	Smoking Category				Interaction p value^*
	Never	Former	>6 hours	Acute	Interaction p value^*
CRP (mg/L) Age, ≤60 vs. >60 years
Age≤60 years	1.89(1.74,2.05)	1.98(1.82,2.16)	2.00(1.63,2.44)	2.61(2.24,3.05)	0.002
Age >60 years	1.96(1.78,2.15)	2.44(2.23,2.67)	3.63(2.73,4.84)	3.93(3.13,4.92)	0.002

ICAM-1 (ng/mL) BMI, kg/m²
BMI<30kg/m²	220(215,226)	225(220,231)	249(235,265)	306(292,320)	0.0003
BMI≥30	230(222,239)	233(225,241)	264(240,290)	262(242,282)	0.0003

We display only statistically significant interactions (p<0.0045, to account for multiple testing). Analyses were conducted on log markers.

^*

p-value from ANCOVA test of interaction between smoking categories and specified clinical variable adjusted for covariates listed in methods.