A randomised controlled trial of financial incentives to increase hepatitis B vaccination completion among people who inject drugs in Australia

作者：Topp Libby; Day Carolyn A; Wand Handan; Deacon Rachel M; van Beek Ingrid; Haber Paul S; Shanahan Marian; Rodgers Craig; Maher Lisa^*

来源：Preventive Medicine, 2013, 57(4): 297-303.

DOI：10.1016/j.ypmed.2013.04.013

• People who inject drugs
• Vaccination
• Hepatitis B
• Contingency management
• Conditional cash transfers

Objective. This study aimed to investigate the efficacy of modest financial incentives in increasing completion of an accelerated 3-dose hepatitis B virus (HBV) vaccination schedule (0, 7, 21 days) among people who inject drugs (PWID). %26lt;br%26gt;Methods. Randomised controlled trial. Participants were randomly allocated to receive $30 Australian Dollars cash following receipt of vaccine doses two and three (%26apos;incentive condition%26apos;), or standard care (control condition%26apos;). Serologically confirmed HBV-susceptible PWID. Two inner-city health services and a field study site in Sydney, Australia. The primary outcome was completion of the vaccination series. Additional assessments included self-reported demographic, drug use and treatment, and risk-taking histories. %26lt;br%26gt;Results. Compared to the control condition, significantly more participants in the incentive condition received all three vaccine doses, under intention-to-treat analyses (n = 139; 87% versus 66%; p =.004); and within the specified window periods under per protocol analyses (n = 107 received three vaccine doses; 92% versus 67%; p =.001). Multivariate analysis indicated that the incentive condition and longer injecting histories significantly increased the likelihood of series completion. Aboriginal/Torres Strait Islanders were significantly less likely to complete the series. %26lt;br%26gt;Conclusions. Modest financial incentives, per-dose, increased adherence to the accelerated HBV vaccination schedule among PWID. Results have implications for increasing HBV and, potentially, other vaccine-preventable infections, among PWID.

• 出版日期2013-10