More than just side-effects: The role of clinical and psychosocial factors in non-adherence to tamoxifen.

The TPB and the CSM provide a useful framework for understanding intentional tamoxifen non-adherence. Elements from both models should be considered when designing interventions to increase adherence rates. Statement of contribution What is already known about this subject? Non-adherence to tamoxifen is common and is associated with poor clinical outcomes. Few modifiable predictors of tamoxifen non-adherence have been identified. What does this study add? Unintentional non-adherence is reported much more frequently than intentional non-adherence. Elements from the CSM and TPB provide a useful framework for understanding non-adherence to tamoxifen. Unique correlates were found for intentional and unintentional non-adherence.