Reviewer’s report
Title: 
A rise in births following contraceptive failure in France between 2010
and 2016: results from the French national perinatal surveys
Version: 
0 
Date: 
25 Jan 2021
Reviewer's report:
PEER REVIEWER ASSESSMENTS: 
OBJECTIVE - Full research articles: is there a clear objective that addresses a
testable research question(s) (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 technical rigor
to allow confidence in the results?
Yes - experiments and analyses were performed appropriately
STATISTICS - Is the use of statistics in the manuscript appropriate?
Yes - appropriate statistical analyses have been used in the study
INTERPRETATION - Is the current interpretation/discussion of the results
reasonable and not overstated?
Yes - the author's interpretation is reasonable
OVERALL MANUSCRIPT POTENTIAL - Is the current version of this work
technically sound? If not, can revisions be made to make the work technically
sound?
Probably - with minor revisions
PEER REVIEWER COMMENTS: 
GENERAL COMMENTS: My main suggestion is to carefully consider the
conclusions at the end of the paper. The first sentence doesn't entirely gel with
the rest of the discussion, which I found to be a reasonable and measured
explanation of the findings.
This is a very thorough and well designed analysis of a large dataset collected in
2010 and 2016. The authors have set out to examine whether a scare over the Pill
in France in 2012 contributed to an increase in births following contraceptive
failure. 
The manuscript is well structured and clear. My only feedback is on the
conclusions section of the discussion which i will detail later.
This manuscript should also be looked over for general grammar and English
editing by a native speaker.
My main suggestion is to carefully consider the conclusions at the end of the
paper. The first sentence doesn't entirely gel with the rest of the discussion,
which I found to be a reasonable and measured explanation of the findings. 
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Is the study design appropriate to answer the research question (including the use
of appropriate controls), and are the conclusions supported by the evidence
presented?
Yes
Are the methods sufficiently described to allow the study to be repeated?
Yes
Is the use of statistics and treatment of uncertainties appropriate?
Yes
Is the presentation of the work clear?
No
Are the images in this manuscript (including electrophoretic gels and blots) free
from apparent manipulation?
Yes