Reviewe r’s report  
 
Title: Gender norms and modern contraceptive use in urban Nig eria: a multilevel longitudinal 
study  
 
Version: 2 Date: 27 Sep 2018  
 
Reviewer: Brianna Magnusson  
 
Reviewer's report:  
 
Thank you for your careful response to my previous review.  I have a few additional suggestions  
 
1) Thank you for providing the references demonstrating the acceptability of lactational 
ammenorrhea as a modern method.  For people like me who might find this inclusion 
odd, please consider adding a reference.  For example around line 267: "...in response to 
the second question chose any of the contraceptive methods identified by the World 
Health Organization as modern methods:..."  
 
2) I accept your rationale for  retaining 4 separate exposure variables.  I believe it would be 
worthwhile to to add a sentence around line 283 mentioning this rationale.  For example: 
"To evaluate the relationship between gender -equitable attitudes and modern 
contraceptive use we utili zed four exposure variables representing attitudes toward: wife 
beating, household decision -making, couples' family planning decisions, and family 
planning self -efficacy.  Evidence suggests (if true) that attitudes in these four areas 
represent different a spects of gender -equitable attitudes and may differentially affect 
modern contraceptive use."  
 
In my experience it's just better to anticipate questions in the manuscript text when at all 
possible.  
 
 
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 cont rols?  
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 statistic s 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:  
 
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 salar y 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 
financ ially 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 organi zation 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 t he 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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