Figure 1.
Seroprevalence of hepatitis B infection and vaccine-associated immunity among MSM by age group.
For those under age 35 years, seroprevalence of hepatitis B infection increased linearly with age, reaching its lowest (12.5%) levels among participants aged 16–19 years and highest (34.3%) levels among participants aged 30–34 years (P = 0.001; χ2 test for trend). No significant difference in the vaccine-associated immunity was found among all age-groups.
Table 1.
Serological markers for hepatitis B infection and immunity among men who have sex with men (MSM) in Beijing, China (N = 1111).
Table 2.
Selected demographics, potential associated behaviors for hepatitis B infection, and immunization among men who have sex with men (MSM) in Beijing, China (N = 1111).
Table 3.
Factors associated with vaccine-associated immunity among non-HBV infected men who have sex with men (MSM) in Beijing, China (N = 817).
Table 4.
Factors associated with hepatitis B infection among non-immunized men who have sex with men (MSM) in Beijing, China (N = 679).