Title: Development and validation of a model to predict rebleeding within three days after
endoscopic hemostasis for high-risk peptic ulcer bleeding
Version: 1 Date: 29 Dec 2021
Reviewer's report:
1.The nomogram successfully included several clinical parameters to predict early rebleeding
after endoscopic hemostasis for peptic ulcer bleeding. These parameters are easy to collect, and
are also compatible with previous studies. Further validation is needed in larger scale multi-
center trial.
2.The equation built for model was LogitP = -0.148- 0.21 * albumin +1.763 * PT +1.873 *
shock-1.363 * haematemesis/melena -0.281 * Forrest classification (Table 4). Please explain
how the  variables were put into the equation. Are they categorical variables or continuous
variables?
3.There are some errors in tenses in the description of methods . Besides, "emergency
"endoscopic hemostasis should be "emergent" endoscopic hemostasis. Some other errors in
English typos should also be examined carefully.
Title: Development and validation of a model to predict rebleeding within three days after
endoscopic hemostasis for high-risk peptic ulcer bleeding
Version: 1 Date: 29 Dec 2021
Reviewer's report:
1.The nomogram successfully included several clinical parameters to predict early rebleeding
after endoscopic hemostasis for peptic ulcer bleeding. These parameters are easy to collect, and
are also compatible with previous studies. Further validation is needed in larger scale multi-
center trial.
2.The equation built for model was LogitP = -0.148- 0.21 * albumin +1.763 * PT +1.873 *
shock-1.363 * haematemesis/melena -0.281 * Forrest classification (Table 4). Please explain
how the  variables were put into the equation. Are they categorical variables or continuous
variables?
3.There are some errors in tenses in the description of methods . Besides, "emergency
"endoscopic hemostasis should be "emergent" endoscopic hemostasis. Some other errors in
English typos should also be examined carefully.
Please review this paper.
user
Title: Development and validation of a model to predict rebleeding within three days after
endoscopic hemostasis for high-risk peptic ulcer bleeding
Version: 1 Date: 29 Dec 2021
Reviewer's report:
1.The nomogram successfully included several clinical parameters to predict early rebleeding
after endoscopic hemostasis for peptic ulcer bleeding. These parameters are easy to collect, and
are also compatible with previous studies. Further validation is needed in larger scale multi-
center trial.
2.The equation built for model was LogitP = -0.148- 0.21 * albumin +1.763 * PT +1.873 *
shock-1.363 * haematemesis/melena -0.281 * Forrest classification (Table 4). Please explain
how the  variables were put into the equation. Are they categorical variables or continuous
variables?
3.There are some errors in tenses in the description of methods . Besides, "emergency
"endoscopic hemostasis should be "emergent" endoscopic hemostasis. Some other errors in
English typos should also be examined carefully.
assistant