TABLE 3—

Factors Associated With Agreement Between Nonproxy Self-Reported Hepatitis B Vaccination Status and Hepatitis B Virus Serological Testing for Those Who Reported Receiving No Doses of Hepatitis B Vaccine: NHANES 1999–2008

	Simple Logistic Model		Main Effects Multivariate Logistic Model
Factor	COR (95% CI)	P	AOR (95% CI)	P
Age at interview, y
14–19 (Ref)	1.00		…a	…a
20–29	3.5 (2.6, 4.8)	< .001
30–39	6.9 (5.0, 9.7)	< .001
40–49	11.7 (8.0, 17.0)	< .001
50–59	8.6 (6.1, 12.2)	< .001
60–69	12.3 (8.8, 17.2)	< .001
≥ 70	12.6 (8.7, 18.4)	< .001
Sex
Male	0.9 (0.8, 1.1)	.34	0.9 (0.8, 1.1)	.27
Female (Ref)	1.00		1.00
Race/ethnicity
Mexican American	0.7 (0.5, 0.9)	.021	0.6 (0.4, 0.8)	.002
Other Hispanic	0.5 (0.4, 0.8)	< .001	0.7 (0.4, 1.1)	.1
White non-Hispanic (Ref)	1.00		1.00
Black non-Hispanic	0.5 (0.4, 0.7)	< .001	0.6 (0.5, 0.7)	< .001
Other/multiple race/ethnicity	0.3 (0.2, 0.5)	< .001	0.4 (0.2, 0.5)	< .001
Place of birth
United States (Ref)	1.00		1.00
Mexico	1.1 (0.8, 1.5)	.7	2.0 (1.3, 3.0)	.001
Elsewhere	0.6 (0.5, 0.8)	< .001	0.9 (0.6, 1.2)	.43
Education
< HS graduate (Ref)	1.00		1.00
HS graduate/GED	1.7 (1.4, 2.1)	< .001	1.5 (1.2, 1.9)	< .001
> HS graduate	1.5 (1.2, 1.8)	< .001	1.4 (1.1, 1.7)	.009
Survey years
1999–2000	1.2 (0.8, 1.7)	.36	…b	…b
2001–2002	1.3 (0.9, 1.8)	.1
2003–2004	1.3 (0.8, 2.1)	.22
2005–2006	1.0 (0.8, 1.3)	.95
2007–2008 (Ref)	1.00
Birth year
Before universal infant vaccination recommendation (before 1991; Ref)	1.00		1.00
After universal infant vaccination recommendation (1991–2005)	0.03 (0.01, 0.09)	< .001	0.04 (0.01, 0.13)	< .001

Note. AOR = adjusted odds ratio; CI = confidence interval; COR = crude odds ratio; GED = general equivalency diploma; HS = high school; NHANES = National Health and Nutrition Examination Survey. The sample size was n = 16 220.

^aVariable not included in multivariate modeling because of collinearity with birth year.

^bVariable not significant in simple or multivariate models and therefore not included in the final model.