Table 3.

Results of analyses regressing prevalence of TAC and extent of TAC (in participants with detectable TAC) on SEP, Acculturation, and their interaction in Mexican-Americans from MESA 2000–2002

	Prevalence of Thoracic Aortic Calcium
	Model 1a(N = 801)	Model 2b(N = 800)	Model 3c(N = 755)
Step 1 (Covariates)	ΔR2=0.408, p<0.01	ΔR2=0.443, p<0.001	ΔR2=0.449, p<0.001
Step 2d	ΔR2=0.003, p>0.10	ΔR2=0.002, p>0.10	ΔR2=0.004, p>0.10
SEP (OR, 95% CI)	1.00 (0.86, 1.15)	1.02 (0.89, 1.19)	1.02 (0.88, 1.19)
ACC(OR, 95% CI)	1.10 (0.97, 1.14)	1.04 (0.96, 1.13)	1.07 (0.98, 1.16)
Step 3	ΔR2=0.010, p<0.01	ΔR2=0.008, p<0.05	ΔR2=0.005, p<0.05
SEP*ACC(OR, 95% CI)	0.93 (0.89, 0.98)**	0.94 (0.89, 0.99)*	0.94 (0.89, 0.99)*
	Extent of Thoracic Aortic Calcium
	Model 1a(N = 218)	Model 2b(N = 218)	Model 3c(N = 210)
Step 1(Covariates)	ΔR2=0.161, p<0.001	ΔR2=0.229, p<0.001	ΔR2=0.240, p<0.001
Step 2d	ΔR2=0.003, p> 0.10	ΔR2=0.007, p>.0.10	ΔR2=0.003, p>.0.10
SEP(OR, 95% CI)	1.02 (0.95, 1.10)	1.04 (0.97, 1.12)	1.03 (0.96, 1.11)
ACC(OR, 95% CI)	0.98 (0.94, 1.02)	0.97 (0.94, 1.02)	0.98 (0.94, 1.03)
Step 3	ΔR2=0.019, p<0.05	ΔR2 =0.021, p<0.10	ΔR2=0.020, p<0.05
SEP*ACC (OR, 95% CI)	0.97 (0.94, 0.99)*	0.97 (0.94, 0.99)*	0.97 (0.94, 0.99)*

Notes: SEP = Socioeconomic position composite score. ACC = Acculturation composite score.

^aControlled for age and gender

^bControlled for age, gender, and biomedical CVD risk factors.

^cControlled for age, gender, biomedical, and behavioral risk factors.

^dMain effects of SEP and ACC, i.e., prior to inclusion of interaction term.

^*p<.05.

^**p<.01.

^#p<.10