UNASSIGNED: 24 Background: Although nearly 80% of @entity0 @entity1 have someone with them during surgical consultations, there is little research that examines the extent, nature, or impact of informal decision support @entity1 (DSPs) such as partner/spouse, other family members, or friends on @entity0 treatment decision making. METHODS: Two data sources were used: 1) A population based sample of @entity1 recently diagnosed in 2006/7 in the Detroit and Los Angeles SEER catchment areas completed a survey 9 months (N=1837, 72% response rate); and 2) A pilot survey study of a convenience sample of 150 @entity0 @entity1 at three clinical sites surveyed within 18 months that examined more details on the extent and nature of informal decision support networks, including: a) quantity and type of DSPs involved in their treatments, b) number of appointments attended by DSPs, and c) @entity1 -reported satisfaction with DSP's involvement in treatment decision making. RESULTS: Both a spouse/partner and another family member were very important in treatment decision-making for 33% of @entity1 ; a spouse/partner alone was very important for 19%; a family member alone was very important for 13%. A spouse/partner or friends were not important in treatment decision making for 24% of @entity1 . Only 19% of @entity1 reported that a friend was very important in treatment decision making. Friends were much more frequently endorsed among @entity1 with family involvement (45%) vs those without family involvement (5%). Latina @entity1 significantly more often reported that the opinion of a family member was very important vs. other race/ethnic groups (71% vs. 39%, p<0.001). @entity1 in the pilot study reported an average of 2.67 DSPs were involved in locoregional decision making (SD = 2.57 ) vs. an average of 0.8 (SD=1.03) for involvement in systemic treatment decision making. CONCLUSIONS: Many @entity0 @entity1 rely on some informal decision support, but there is a very wide variation in the extent and nature of this support. Further work is needed to understand how to best incorporate DSPs into the treatment decision process. Additional findings will be presented to further describe the impact of informal treatment decision support for @entity1 with @entity0 .

Informal decision support networks and treatment decisions for XXXX .

@entity1 :: ('9606', 'Species') :: ['women', 'Patients', 'patients', 'patient', 'persons'] @entity0 :: ('MESH:D001943', 'Disease') :: ['breast cancer']
@entity0 :: (MESH:D001943,Disease) :: ['breast cancer']
