Reviewer’s report
Title: 
Association between sleep quality and central obesity among southern
Chinese reproductive-aged women
Version: 
0 
Date: 
10 Jan 2021
Reviewer's report:
Li and colleagues provide a study that investigates the relationship between sleep
quality and central obesity among reproductive-aged women from Southern
China. Although the geographical distribution of the participants is limited, the
sample size and the study design are adequate, bringing new data to the field and
underscoring findings previously reported by similar studies from other
geographical regions. The manuscript is nicely written and well focused.
Nevertheless, it presents some minor issues that must be addressed by improving
the presentation and interpretation of the current data. As such, I only have a
couple of comments as below. 
1) The authors found that the odds of central obesity were negatively related with
subjective sleep quality scores. Although I understand the subjective nature of
such scores, I think that the authors failed at providing a more compelling
explanation for such finding. In this regard, some statements throughout the
manuscript seem to be in disagreement (lines 254-256 vs lines 290-297). 
2) At the end of the manuscript, the authors present the limitations of the study.
Similarly, I would advise the authors to present its strengths and underscore the
relevance/ novelty of the data that it brings to the field.
3) The manuscript presents minor style and grammar issues that should be
revised.
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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?
Yes
Are the images in this manuscript (including electrophoretic gels and blots) free
from apparent manipulation?
Yes