Reviewer ’s report  
 
Title: Age at mena rche and prevention of hypertension through lifestyle in young Chinese adult 
women: result from Project ELEFANT  
 
Version: 0 Date: 13 Aug 2018  
 
Reviewer: Juan Jesús Fernández Alba  
 
Reviewer's report:  
 
Dear Authors.  
 
Congratulations for a good job.  
 
 
Only two considerations:  
1. Your results suggest that tobacco use does not increase the risk of hypertension. 
However, being a passive smoker does increase the risk of hypertension. You should 
explain this finding in the discussion.  
2. As is known, the reference values for BMI a re different in western and eastern countries. 
Although your approach is completely correct, they should include this aspect as a 
limitation of the work to extrapolate their data to the western population.  
 
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  
 
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 financially from the publication of this  
manuscript, either now or in the future?  
 
2. Do you hold any  stocks or shares in an organisation that may in any way gain or lose  
financially from the publication of this manuscript, either now or in the future?  
 
3. Do you hold or are you currently applying for any patents relating to the content of the  
manuscript?  
 
4. Have you received reimbursements, fees, funding, or salary from an organization 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 com peting interests in relation to this paper?  
 
If you can answer no to all of the above, write 'I declare that I have no competing interests' 
below.  If your reply is yes to any, please give details below.  
 
I declare that I have no competing interests.  
 
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on my report to the authors and, if the manuscript is accepted for publication, my named report  
including any attachments I upload will be posted on the website along  with the authors'  
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which I do not wish to be included in my named report  can be included as confidential comments  
to the editors, which will not be published.  
 
I agree to the open peer review policy of the journal