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Open Access Publications from the University of California

Adherence enhancers in pill-related clinical trials: a health behavior in cancer prevention model-based approach.

  • Author(s): Atwood, J R
  • Giordano, L
  • Vargas, P
  • Blackwell, G G
  • Earnest, D L
  • Meyskens, F
  • Alberts, D
  • et al.

Preventing non-adherence and treating adherence failure are important to consider in designing community-based clinical trials. The approach and methods for managing adherence are vital. This paper describes a practical and theoretically-based strategy for managing adherence in a small cancer prevention trial with subjects (n = 40) taking a non-steroidal anti-inflammatory drug, piroxicam. Average daily pill intake adherence was exceptionally high (97.4%) as measured by self-report calendar. Thus, the generalized adherence enhancement approach used in this study may have been a related factor, although statistical model-testing was not possible in this small trial. The generalized intervention took into account factors such as the potential barriers and benefits of being in the study, self-efficacy and satisfaction with the participant/staff relationship. These and other theoretical variables were incorporated into an overall adherence strategy that is discussed.

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