Anti- HBs titre(m IU/mL) Diabetics(n=130) Non diabetics (n=130) TOS p No. % No. % X2=3.331 0.068 <10 92 70.8 78 60.0 ≥ 10 38 29.2 52 40.0 Median 3.0 6.8 Z=-3.026 0 .002*

Table 1: HBV vaccine long-term immune response in the studied groups measured by anti-HBs titre. TOS: test of significance, *P<0.05.