• Jennifer A Pellowski, Devon M Price, Aerielle M Allen, Lisa A Eaton, and Seth C Kalichman.
• a Department of Psychiatry and Human Behavior , Alpert Medical School of Brown University , Providence , RI , USA.
• Psychol Health. 2017 Sep 1; 32 (9): 1127-1139.

ObjectiveThe purpose of this study was to examine the relationships between medical mistrust and trust and to determine if these measures differentially predict antiretroviral therapy (ART) medication adherence for African-American adults living with HIV.DesignA total of 458 HIV positive African-Americans completed a cross-sectional survey.Main Outcome MeasuresSelf-reported ART adherence was collected using the visual-analog scale. The Beliefs About Medicines Questionnaire was used to assess medication necessity and concern beliefs.ResultsAll measures of medical mistrust and trust were significantly negatively correlated, ranging from r = -.339 to -.504. Race-based medical mistrust significantly predicted medication necessity and concern beliefs, whereas general medical mistrust only significantly predicted medication concerns. Both measures of trust significantly predicted medication necessity beliefs and medication concerns. Higher levels of race-based medical mistrust predicted lower medication adherence, whereas, neither trust in own physician nor trust in health care provider significantly predicted medication adherence. However, trust in own physician significantly predicted medication necessity beliefs, which predicted medication adherence.ConclusionTrust and mistrust are not simply opposites of one another. These findings provide evidence for the complexity of understanding the relationship between health care trust, mistrust and patient-related health beliefs and behaviours.

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