Background
: Hepatitis B vaccination schedule commonly used in Korea is divided largely into 0, 1, 2 month schedule vaccination group(0, 1, 2 group) and 0, 1, 6 month scheduled vaccination gorup(0, 1, 6 group). The only difference between two groups is the interval from 2nd dose to 3rd dose. This study had been carried out to find whether the difference of vaccination interval influence the vaccination completion rate or not.

Methods : Study objects are 135 persons over 20 years old who had hepatitis B vaccina-tion more than once in injection room of Dongkuk University Kyong-ju Hospital from Jan. 1st in 1996 to Dec. 31th in 1996. Data about vaccination completion were gathered form record book of injection room and telephone interview.

Results : Hepatitis B vaccination completion rate is 73.8% in 0, 1, 2 group and 72.5% in 0, 1, 6 group. The reasons for incomplete vaccination are forgetting vaccination date(36.4% in 0, 1, 2 group and 50% in 0, 1, 6 group), having no time to spare for vaccination(54.5% in 0, 1, 2 group and 43% in 0, 1, 6 group) and knowing positive HBsAb before completion of scheduled vaccination(9.1% in 0, 1, 2 group and 7% in 0, 1, 6 group).

Conclusion : There is no difference in Hepatitis B vaccination completion rate between 0, 1, 2 group and 0, 1, 6 group.