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    Psychol Health Med. 2012;17(2):223-34. Epub 2012 Jan 17.

    Cognitive factors and willingness to participate in an HIV vaccine trial among HIV-positive injection drug users.

    Source

    School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada.

    Abstract

    There are gaps in our knowledge of the role cognitive factors play in determining people's willingness to participate (WTP) in therapeutic HIV vaccine trials. Using a cross-sectional study of HIV-positive injection drug users (IDU), we determined the role of three cognitive factors: HIV treatment optimism, self-efficacy beliefs, and knowledge of vaccine trial concepts in relation to WTP in a hypothetical phase 3 therapeutic HIV vaccine trial. WTP was 54%. Participants tended to be low in HIV treatment optimism (mean = 3.9/10), high in self-efficacy (mean = 79.8/100), and low in knowledge (mean = 4.1/10). Items pertaining to HIV treatment optimism and knowledge of HIV vaccine trial concepts were generally unrelated to WTP. An increase in self-efficacy had a statistically significant positive association with WTP (OR = 1.61, 95% CI = 1.04-2.46, p < 0.05). Furthermore, most of these HIV-positive participants had high levels of self-efficacy, so we are most confident about this relationship at such levels. These findings indicate that interventions focused on increasing self-efficacy could enhance WTP among HIV-positive IDU.

    PMID:
    22250925
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC3290734
    [Available on 2013/3/1]

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