Reviewer’s report
Title: 
Association between sleep quality and central obesity among southern
Chinese reproductive-aged women
Version: 
0 
Date: 
02 Jan 2021
Reviewer's report:
Line 106: consider deleting "suffering"
Authors should include the meaning of central obesity in the Background section
Methods
Line 123: Should be obesity prevalence not obesity rate.
Line 127: "Simple" random sampling not "sample" random sampling
Line 154: Need more information about the different categories of exercise
Line 157: WC should be written in full or explained when used for the first time
Results
Line 190: Should be "a total of 2449 women were..."
Line 193-194:This sentence is not clear "As increasing by age, there was a
higher prevalence of central obesity (P<0.001)"
Line 202: Since OR is a measure of association, not correlation, the authors
should use "associated' not "correlated"
Discussion
Line 231: Authors should consider using "association" not "correlation". 
General
Authors need to discuss the limitations or weakness of some of the variables for
e.g the smoking variable
The limitations section needs to be expanded to include other potential
limitations including reporting bias and others.
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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?
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