Reviewer’s report  
 
Title: Factors associated with menstrual cycle irregularity and menopause  
 
Version: 0 Date: 16 Oct 2017  
 
Reviewer: Joseph Kwame Wulifan  
 
Reviewer's report:  
 
Line 52 - Pg 4 -  
 
only a few have been performed in Asia, where women have relatively low BMI and smoking 
prevalence. (Could you cite some of these studies you are referring too?)  
 
 
Line 63 -65 Pg 5 - 
 
Multistage stratified probability sampling methods (Could you explain h ow you applied the 
multistage stratified probability sampling in a sentence?)  
 
 
 
Are t he 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 adequat ely 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.  
 
Not relevant to this manuscript  
 
 
Quality of written English  
Please indicate the quality of language in the manuscript : 
 
Acceptable  
 
 
 
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