Review for 10.1186/s12876-023-02683-w (2023)

Reviewer’s report
Title: 
Association between air temperature and emergency admission for
esophagogastric variceal bleeding: a case-crossover study in Beijing, China
Version: 
0 
Date: 
06 Jul 2022
Reviewer: 
Shahram Agah
Reviewer's report:
This is an interesting manuscript on the impact of air temperature on emergency
admission for esophagogastric variceal bleeding with large sample size and a
comprehensive method. My comments are as follows:
1- In the introduction section, it would be better to include the hypothesis of how
and why air temperature could affect esophagogastric variceal bleeding. 
2- The discussion section needs improvement in English. 
3- The discussion section is a bit vague. Please elaborate more on the previous
studies and the current study results. 
4- Patients were only stratified by age and sex. It would be better if the data is
available to stratify by the etiology of liver disease, HCC status, co-morbidities,
and size or grade of varices.
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