Reviewer ’s report  
 
Title: Factors associated with early age at menarche among Thai adolescents in Bangkok: A 
cross -sectional study  
 
Version: 0 Date: 10 Jun 2016  
 
Reviewer: Anita Swede  
 
Reviewer's report:  
 
The article submitted for review is very interesting and curren t part of the research topics. Given 
that a long time has not been studied age of menarche, the more, the results are important and 
valuable for publication. Mean age at menarche of Thai girls is lower than previously reported. I 
wonder if the result does not come from error in the evaluation the age of menarche. The way the 
authors assessed the age of menarche is not clear. Usually  status quo or retrospective method is 
used for determination of age at menarche. Using a retrospective method in cross -sectio nal 
studies may lead to understated menarcheal age.  
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 manu script 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 recommend additional statistical review  
 
Quality of written English  
Please indicate the quality of language in the manuscript:  
 
Acceptable  
 
Declaration of competing interests  
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1. Have you in the past five year s received reimbursements, fees, funding, or salary from an  
organisation that may in any way gain or lose financially 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 organization that 
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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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