TABLE 4—

Factors Associated With Agreement Between Nonproxy Self-Reported Hepatitis B Vaccination Status and Hepatitis B Virus Serological Testing for Those Who Reported Receiving at Least 3 Doses of Hepatitis B Vaccine: NHANES 1999–2008

	Simple Logistic Model		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	0.4 (0.3, 0.5)	< .001
30–39	0.3 (0.2, 0.4)	< .001
40–49	0.3 (0.2, 0.4)	< .001
50–59	0.3 (0.2, 0.4)	< .001
60–69	0.3 (0.2, 0.4)	< .001
≥ 70	0.2 (0.1, 0.3)	< .001
Sex
Male	0.7 (0.6, 0.8)	< .001	0.7 (0.6, 0.8)	< .001
Female (Ref)	1.00		1.00
Race/ethnicity
Mexican American	0.5 (0.4, 0.6)	< .001	0.8 (0.6, 0.9)	.006
Other Hispanic	0.7 (0.5, 0.9)	.01	0.7 (0.5, 0.9)	.009
White non-Hispanic (Ref)	1.00		1.00
Black non-Hispanic	0.6 (0.5, 0.7)	< .001	0.6 (0.5, 0.7)	< .001
Other/multiple race/ethnicity	1.2 (0.9, 1.7)	.16	1.3 (0.9, 1.8)	.11
Place of birth
United States (Ref)	1.00		1.00
Mexico	0.3 (0.2, 0.4)	< .001	0.4 (0.3, 0.5)	< .001
Elsewhere	0.9 (0.7, 1.2)	.51	0.9 (0.7, 1.2)	.67
Education
< HS graduate (Ref)	1.00		1.00
HS graduate/GED	0.7 (0.6, 0.8)	< .001	0.7 (0.6, 0.8)	< .001
> HS graduate	1.1 (0.9, 1.2)	.47	0.9 (0.8, 1.1)	0.18
Survey years
1999–2000	0.8 (0.7, 0.9)	.002	…b	…b
2001–2002	0.9 (0.8, 1.2)	.6
2003–2004	0.8 (0.7, 1.0)	.047
2005–2006	1.0 (0.8, 1.1)	.59
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)	3.6 (2.1, 6.1)	< .001	3.3 (2.0, 5.5)	< .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 = 6835.

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

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