Table 3.

Multivariable logistic regression model examining healthcare and demographic characteristics associated with HPV vaccine initiation among vaccine-eligible individuals (ages 9–26 years) in the NHANES dataset

	NHANES 2015–2016			NHANES 2017–2018
	Adj. Odds Ratio	p-value		Adj. Odds Ratio	p-value
Demographics
Age
Continuous	1.054 (1.026 to 1.083)	p = .001**		1.107 (1.071 to 1.145)	p = .000***
Sex
Female	2.094 (1.524 to 2.876)	p = .000***		1.793 (1.269 to 2.535)	p = .003**
Race
Non-Hispanic White	Ref			Ref
Hispanic	1.019 (0.777 to 1.335)	p = .885		1.274 (0.866 to 1.873)	p = .201
Non-Hispanic Black	1.188 (0.908 to 1.553)	p = .192		1.093 (0.773 to 1.547)	p = .592
Non-Hispanic Asian	0.812 (0.486 to 1.358)	p = .403		0.876 (0.458 to 1.676)	p = .670
Other (or multi-racial)	0.661 (0.244 to 1.169)	p = .060		1.164 (0.738 to 1.836)	p = .488
Family Income
$65,000 and greater	1.177 (0.871 to 1.590)	p = .266		1.330 (1.065 to 1.661)	p = .015*
HH ref person’s education level
College or higher	Ref			Ref
< HS degree	1.033 (0.644 to 1.655)	p = .886		0.819 (0.514 to 1.304)	p = .374
HS degree or Equiv.	1.047 (0.820 to 1.338)	p = .693		1.108 (0.728 to 1.687)	p = .610
Clinical
Routine place of healthcare
Has routine place	1.919 (1.250 to 2.948)	p = .006**		1.985 (1.071 to 3.682)	p = .032*
Times received healthcare over past year
None	0.609 (0.411 to 0.901)	p = .017*		0.450 (0.270 to 0.748)	p = .004**
Health insurance
Has coverage	1.218 (0.761 to 1.951)	p = .385		1.679 (1.124 to 2.506)	p = .015*

Data expressed as odds ratios with 95% confidence intervals. ***P < 0.001, **P < 0.01, *P < 0.05.