Guide to Decide uses a multi-phased experimental process to explore methods of communicating risk regarding tamoxifen or raloxifene prophylaxis to women at high risk for breast cancer.
Aim 1. Develop and test a tamoxifen prophylaxis decision aid by screening three risk messages and three graphical formats using fractional factorial designs.
Aim 2. Screen for individual characteristics (e.g., ability to think numerically) that will point the way towards methods of improving decision aids by tailoring risk messages.
Aim 3. Test two novel methods of evaluating whether decision aids improve decisions.
Aim 1. Refine our understanding of the factors that increase the effectiveness of the decision aid in Phase I, by isolating specific components of those factors.
Aim 2. Refine and further explore promising interactions between risk messages/graphical formats and specific individual characteristics.
Aim 3. Determine whether improved knowledge of the risks and benefits of tamoxifen translates into behavioral outcomes such as consulting with a physician.
1,184 women in two Cancer Research Network HMOs.