Reviewer ’s report  
 
Title: Prevalence of Primary Dysmenorrhea, Its Intensity, Impact and Associated Factors among  
Female Students ’ at Gondar Town Preparatory School, Northwest Ethiopia  
 
Version: 3 Date: 01 Nov 2019  
 
Reviewer: Reviewer 2  
 
Reviewer's report:  
"PEER REVIEWER ASSESSMENTS:  
 
OBJECTIVE - Full research articles: is there a clear objective that addresses one or several 
testable research questions? (Brief or other article types: is there a clear objective?)  
Yes - there is  a clear objective  
 
DESIGN - Is the current approach (including controls and analysis protocols) appropriate for the 
objective?  
Yes - the approach is appropriate  
 
EXECUTION - Are the experiments and analyses performed with sufficient technical rigor to 
allow confidence in the results?  
No - there are minor issues  
 
STATISTICS - Is the use of statistics in the manuscript appropriate?  
No - there are issues with the statistics in the study  
 
INTERPRETATION - Is the current interpretation/discussion of the results  reasonable and not 
overstated?  
No - there are minor issues  
 
OVERALL MANUSCRIPT POTENTIAL - Has the author addressed your concerns sufficiently 
for you to now recommend the work as a technically sound contribution? If not, can further 
revisions be made to make the work technically sound?  
Probably - with minor revisions  
 
PEER REVIEWER COMMENTS:  
 
GENERAL COMMENTS: Overall, they have made some improvements to the paper. However, 
they still base their power calcs on primary outcomes rather than on consideration of some of the 
mediating variables which are exploratory in view of the lower power there is for these. This 
issue still needs to be stated clearly in the paper. Also, much of the grammar and use of English 
remains poor, including in the abstract which is the part that most readers will access.  
 
REQUESTED REVISIONS:  
Be circumspect about media ting variables where stat power is lower"  
 
 
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.  
 
No 
 
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 
additional statistical review?  
If an additional statistical review is recommended, please speci fy 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:  
 
Needs some language c orrections before being published  
 
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, f ees, funding, or salary from an 
organisation that may in any way gain or lose financial ly from the publication of this 
manuscript, either now or in the future?  
 
2. Do you hold any stocks or shares in an organisation t hat 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 receiv ed 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 competing 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.  
 
This reviewer has been recruited by a partner organization, Research Square. Reviewers with 
declared or apparent competing interests are not utilized for t hese reviews. T his reviewer has 
agreed to publication of their comments online under a Creat ive Commons Attribution License 
attributed to Research Square and was paid a small honorarium for  completing the review within 
a specified timeframe. Honoraria for reviews such as this are paid re gardless of the reviewer  
recommendation.  
  
I agree to the open peer review policy of the journal. I understan d that my name will be included 
on my report to the authors and, if the manuscript is accepted f or publication, my named report 
including any attachments I upload will  be posted on the website along with the authors' 
responses. I agree for my report to be made available under an Open Access Creative Commons 
CC-BY license ( http://creativecommons.org/licenses/by/4.0/ ). I understand that any comments 
which I do not wish to  be included in my named report can be in cluded as confidential comments 
to the editors, which will not be published.  
 
I agree to the open peer review policy of the journal