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Hepatitis B Acceptability and Vaccination Incentive Trial

A randomised controlled trial to evaluate the effectiveness of a small financial incentive after the second and third dose of a Hepatitis B vaccine on vaccine completion in people who inject drugs.

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12608000436370
Acronym
HAVIT
Enrollment
200
Registered
2008-08-29
Start date
2008-10-13
Completion date
Unknown
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

This trial seeks to investigate if providing a small financial incentive ($30) will increase the uptake and completion of the hepatitis B vaccine among injecting drug users.

Interventions

Provision of a small financial incentives i.e. $30 will be given after the participant receives the second dose and $30 after the participant receives the third dose of Hepatitis B vaccine. Incentives will be given to participants randomised to the incentive arm only.

Sponsors

The Kirby Institute (formerly the National Centre in HIV Epidemiology and Clinical Research)
Lead SponsorOther

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Prevention
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
16 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

1) Aged 16 years and above; 2) Injected drugs at least once in the preceding 6 months; 3) No previous hepatitis B infection, and a maximum of one previous dose of hepatitis B vaccination, or unknown infection and vaccination status, based on self-report and, where available medical records; 4) ability to provide informed consent, to be randomised and attend vaccinations over a period of 3 weeks and attend follow up at 12 weeks post randomisation.

Exclusion criteria

Evidence of natural or vaccine induced immunity; 2) Previous exposure or two+ vaccinations (as identified by self report), where HBV surface antibody =10 mIU/ml; 3) Serious mental or physical illness or disability likely to impact on capacity to complete the study procedures; 4) Insufficient English language skills that will impair ability to give informed consent or provide reliable responses to study interviews/questionnaires; 5) Human Immunodeficiency Virus (HIV) infection; 6) Refusal to be vaccinated against hepatitis B.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026