Reviewer’s report
Title: Correlates of regret with treatment decision-making among Japanese women with breast cancer:  
Results of an Internet-based cross-sectional survey
Version: 1 Date: 24 May 2019
Reviewer: Kathrin Gschwendtner
Reviewer's report:
Thank you very much for your effort on the revision. I have some minor recommendations:
Background:
P 4, line 17: my wording suggestion: "[11]. However, another study found that almost all…."
P4, line 20: correction "studies conducted outside "
P 5, line 2-5: my wording suggestion: "This finding suggests that exploring decision-making regret  
might be helpful to gain a better understanding of decision-making itself. The aforementioned studies  
regarding Japanese women with BC focused on the decision satisfaction or the satisfaction with the  
decision-making process. We believe the exploring not only satisfaction but also regret with…."
Methods:
P 6, line 11: "computed based on the five decision making styles"- in the regression analysis and also in  
the description before you cluster the 5 items to 3 categories- you did not to that for the congruence?  
Why?
Results:
P 9: line 11: my wording suggestion: "Importance of other factors on treatment decision"
Are the methods appropriate and well described?
If not, please specify what is required in your comments to the authors.
Yes
Does the work include the necessary controls?
If not, please specify which controls are required in your comments to the authors.
Yes
Are the conclusions drawn adequately supported by the data shown?
If not, please explain in your comments to the authors.
Yes
Are you able to assess any statistics in the manuscript or would you recommend an additional  
statistical review?
If  an  additional  statistical  review  is  recommended,  please  specify  what  aspects  require  further  
assessment in your comments to the editors.
I am able to assess the statistics
Quality of written English
Please indicate the quality of language in the manuscript:
Acceptable
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