Fig 1.
Consort diagram showing the inclusion of children in this study.
Fig 2.
Anti-HBs titer categorized by age.
Children were categorized by anti-HBs antibodies and age. Bar chart displaying number of children according to categories of anti-HBs (<10; 10–99; ≥100 IU/L) across the age (< 3; 3; 4; ≥5 years).
Table 1.
Baseline information about children, their hepatitis B vaccine schedule and potential factor of risk to exposure to HBV, stratified by anti-HBs titer.
Fig 3.
Association between Hepatitis B antibodies and (A) age, (B) gap time. (A) Linear regression model assessing anti-HBs (log-transformed) and age. Black line indicates association correlate, and gray lines indicate 95% CI. (B) Linear regression model assessing both log-transformed anti-HBs and gap time (months) between last and preceding vaccine dose. Black line indicates association correlate, and gray lines indicate 95% CI.
Fig 4.
Risk of anti-HBs<10IU/L by factors associated with low anti-HB levels in a logistic regression model.
Table 2.
Association between level of anti-HBs, age and gap time.