Reviewer ’s report  
 
Title: Age at mena rche and prevention of hypertension through lifestyle in young Chinese adult 
women: result from Project ELEFANT  
 
Version: 1 Date: 12 Oct 2018  
 
Reviewer: Solomon  Gebrehiwot  
 
Reviewer's report:  
 
Solomon Weldemariam Gebrehiwot, MSc. (Reviewer 2): BMWH -D-18-00339R1  
Reviewer report  
Name of reviewer: Solomon Weldemariam  
Thank you for the opportunity to review again this manuscript entitled: Age at menarche and 
prevention of hypertension through lifest yle in young Chinese adult women: result from Project 
ELEFANT.  
Again I would like to thank Authors for your effort to address my concerns. Most of my 
concerns were addressed but still I have some concerns on some points as follows.  
1. Of course, the study design is described in page 5, line 108 but my concern is the 
subheading labeled as "study design" in page 6, and line number 128 should be replaced by 
subheading "sampling process and eligibility criteria" because the content under it does not 
reflect the  subheading.  It talks about sampling process and exclusion criteria but the subheading 
is study design how could be this?  
2. Statistical analysis  
I have raised a question on this subheading but my concern was not addressed. I have 
recommended you to mention the cut off point for p value. Usually in analysis first we perform 
bivariate analysis then we will transport variables that have significance a t some point of p -value 
to multivariable logistic regression. Finally, we describe variables with p -value <0.05 as 
significantly associated variable with the outcome variables.  
 
 
 
 
Are the methods appropriate and well described?  
If not, please specify what is required in your comments to the authors.  
 
No 
 
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 intere sts' below.  
 
I agree to the open peer review policy of the journal. I understand that my name will be included  
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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to the editors, which will not be published.  
 
I agree to the open peer review policy of the journal