Review for 10.1186/s12876-021-01715-7 (2021)

Reviewer’s report
Title: 
Very-Low-Dose Aspirin and Surveillance Colonoscopy is Cost-effective
in Secondary Prevention of Colorectal Cancer in Individuals with Advanced
Adenomas: Network Meta-analysis and Cost-effectiveness Analysis
Version: 
0 
Date: 
24 Jan 2021
Reviewer's report:
The article by Sajesh K Veettil et al. it is well structured and although the subject
is complex and requires a lot of statistical data, it is easy to understand.
The abstract well summarizes the content of the article.
The Methods have been appropriately described and the Conclusions are well
supported by the evidence.
The statistical analyzes, figures and graphs are very accurate.
The literature has also been adequately inserted and discussed.
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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