Reviewer’ s report
Title: Relationship of Breastfeeding Duration with Joint Pain and Knee Osteoarthritis in Middle-
aged Korean Women: A Cross-sectional Study using the Korea National Health and NutritionExamination Survey
Version: 1Date: 30 Jul 2020
Reviewer's report:
The authors have done a good job in addressing my earlier comments and queries
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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?
YesAre the methods sufficiently described to allow the study to be repeated?Yes
Is the use of statistics and treatment of uncertainties appropriate?
YesIs the presentation of the work clear?YesAre the images in this manuscript (including electrophoretic gels and blots) free from apparent
manipulation?
Yes