Variations In Objective Knowledge Among Decision-Support Persons Of Patients With Early Stage Breast Cancer.

e19110 Background: Patients with breast cancer face complex decisions regarding treatment options, and frequently involve family, friends, and other decision supporters in decision-making. A high-quality decision is one that is both informed and values-concordant. While much has been done to evaluate the quality of decision-making among patients, very little is known about how decision supporters fit within that framework. Thus, we sought to understand variations in objective knowledge among decision supporters. Methods: Patients with stage 0-II breast cancer reported to Georgia and LA SEER registries in 2014-15 and their key decision support person (DSP) were surveyed separately. DSPs were asked 4 objective knowledge questions regarding breast cancer treatment with responses dichotomized into high/low knowledge. Bivariate analyses and multivariable regression models were used to assess associations between DSP knowledge and important DSP characteristics (type of DSP, age, race, education), level of DSP engagement in 3 domains of patients’ decision-making (feeling informed about decisions, extent of and satisfaction with their involvement in decisions, and being aware of patients’ values/preferences), and patient clinical factors (stage, chemotherapy receipt, radiation receipt, type of surgery). Results: 2502 patients (68% RR) and 1203 eligible DSPs (70% RR) responded. Most DSPs were husbands or daughters. 21% were Latino, 17% were black, 20% had 更多