Fig. 4
From: Seroepidemiology of HBV infection among health-care workers in South Sulawesi, Indonesia
The prevalence of HBsAg, anti-HBc, and anti-HBs based on the length of service period (< 5, 5–10, and ≥ 10 years) among 467 health-care workers (HCWs). Linear-by-linear association test showed significant increasing trends of anti-HBc (p = 0.010) and anti-HBs and non-isolated anti-HBs (p = 0.003). No significant difference was found in the prevalence of vaccinated-anti-HBs among the three groups