Reviewer ’s report  
 
Title: Is menopause still evolving? Evidence from a longitudinal s tudy of multiethnic 
populations and its relevance to women's health  
 
Version: 0 Date: 31 Jan 2020  
 
Reviewer: Elżbieta Grochans  
 
Reviewer's report:  
The article raises a very interesting problem regarding the attempt to evolve menopause in 
women. The authors used many -year population research, in cluding various ethnic groups.   
An interesting idea, well -matched methodology. The study involved 747 women participating in 
the SWAN project.  
There is no information how long women from different ethnic groups lived in the USA. The 
duration of stay outs ide the natural native environment also affects health. Processes occurring as 
a result of the loss of reproductive abilities run very differently and are also influenced by 
environmental factors (lifestyle, diet, physical environment, etc.). Despite this limitation, this 
research is very innovative and interesting. Neither the description of the methodology nor the 
description of the results give rise to concern. The discussion is very extensive. The conclusions 
seem too bold―the authors should make them m ore specific and explain the theory of partner 
selection with caution.    
 
 
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 re quired 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.  
 
No 
 
Are you able to assess any statistics in the manus cript or would you recommend an 
addit ional statistical review?  
If an additional statistical review is recommended, please speci fy what aspects require further 
assessment in your comments to the editors.  
 
I recommend additional statistical review  
 
Quality of written English  
Please indicate the quality of language in the manuscript:  
 
Acceptable  
 
Declaration of competing interests  
Please complete a declaration of competing interests, considering the following questions:  
 
1. Have you in the past five years received reimbursements, fees, funding, or salary from an 
organisation that may in any way gain or lose financial ly from the publication of this 
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3. Do you hold or are you currently applying for any patents  relating  to the content of the 
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4. Have you received reimbursements, fees, funding, or salary from an organiz ation that 
holds or has applied for patents relating to the content of the manuscript?  
 
5. Do you have any other financial competing interests?  
 
6. Do you have any non -financial competing interests in relation to this paper?  
 
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below. If your reply is yes to any, please give details below.  
 
'I declare that I have no competing interests  
 
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