Table 1:

Attributes and Levels Used in Conjoint Analysis

Attribute	Levels
Type of Surgery	Single Mastectomy Double Mastectomy
Postoperative Surgical Complication Rates Following Single Mastectomy	5% 10% 20%
Postoperative Surgical Complication Rates Following Double Mastectomy	15% 30% 50%
10-year Future Contralateral Cancer Risk Following Single Mastectomy	3% 10% 15%
10-year Future Cancer Risk Following Double Mastectomy	0.3% 1% 3%
Frequency of Follow-Up Surveillance Imaging	6 months 12 months None
Chest Symmetry Following Single Mastectomy	Somewhat Symmetric Asymmetric
Chest Symmetry Following Double Mastectomy	Highly Symmetric Somewhat Symmetric