Review for 10.1186/s12876-021-01611-0 (2021)

Reviewer’s report
Title: 
Efficacy of a novel hemostatic adhesive powder in patients with upper gastrointestinal tumor
bleeding
Version: 
0 
Date: 
01 Dec 2020
Reviewer's report:
Congratulations on your achievement. I have several questions. First of all, the most beneficial point of
UI-EWD is the high initial hemostasis rate and low rebleeding rate. However, there is no comparator in
this study. Please, add a comparative analysis of initial hemostasis success and rebleeding rate between
tumor bleeding treated by UI-EWD and by non-UI-EWD.
I do not think figure 4 and survival analysis 
are appropriate in the current format of this study. If authors
add comparative analysis between UI-EWD and non-UI-EWD, comparative K-M curve would be
meaningful.
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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