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: 
21 Jan 2021
Reviewer's report:
The authors tried to evaluated the utility or effectiveness of aspirin to prevent
colon cancer. I think there are many reports about this problem, which are
reliable ones. So, it is not necessary to perform network meta-analysis.
There were too many 
abbreviations in this article. So it is difficult to understand
the contents.
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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?
No
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Yes
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from apparent manipulation?
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