Table 2.

Association between gender, age of birth, time from vaccination and protection (titer > 10 UI/mL). Univariate and multivariate analysis.

Variables	Total	Titer >10		p-Value
		Percent	Number	Percent	Univariate	Multivariate
Gender
Female	481	67.3	435	90.3	<0.05	<0.05
Male	253	32.7	211	83.4
Age of vaccination
1 year old	114	13,.6	88	77.2	<0.05	<0.05
12 years old	620	86.4	558	90.0
Time from vaccination
<20 years	416	55.7	360	86.5	=0.09
≥20 years	318	44.3	286	89.9