Reviewer’s report
Title: 
An International Mixed Methods Study to Develop a New Preference-
Based Measure for Women with Breast Cancer: The BREAST-Q Utility Module
Version: 
0 
Date: 
15 Jul 2020
Reviewer's report:
Here the authors describe their methodology for the development of the first
preference based measure (PBM) specific to breast cancer, the BREAST-Q
Utility Module, using a standardized methodology incorporating qualitative,
quantitative, and expert input in a stepwise fashion. This study is very well done
and I have no significant comments. 
Specific comments:
1) it's not clear from the MS how the 57 patients from 3 centers were selected
and whether they had completed all of their treatments, both of which may have
affected their results. 
2) about 80% had mastectomy - in that they would have been more symptomatic,
was this part of the study design?
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Acceptable
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