Review for 10.1186/s12876-019-1108-8 (2019)

Reviewer ’s report  
 
Title: Assessment of Prevalence and Risk Factors of Helicobacter Pylori Infection in an Oilfield  
Community in Hebei, China  
 
Version: 0 Date: 12 Sep 2019  
 
Reviewer: Rosa Filiberti  
 
Reviewer's r eport:  
The paper reports on prevalence and risk factors of Helicobacter pylori infection in China. The 
topic could be of interest, but I have some concerns:  
 
Methods  
In this contest the variables "household hygiene"  and "surrounding e nvironment" do not give 
any information. Classification is too indefinite and vague and sounds to be too much subjective  
 
References   
The paper is full of mistakes with regard references (i.e. text does not mention ref 3, all 
references all wrong, Naja is n ot reported in reference, the reference for Brenner does not fit,....)  
 
  
Are the methods appropriate and well described?  
If not, please specify what is required in your comments to the authors.  
 
No 
 
Does the work include the necessary controls?  
If not, please specify which controls are required in your comments to the autho rs. 
 
Yes 
 
Are the conclusions drawn adequately supported by the data shown?  
If not, please explain in your comments to the authors.  
 
No 
 
Are you able to assess any statistics in the manus cript or would you recommend an 
additional statistical revie w? 
If an additional statistical review is recommended, please speci fy what aspects require further 
assessment in your comments to the editors.  
 
Not relevant to this manuscript  
 
Quality of written English  
Please indicate the quality of language in the manuscript:  
 
Needs some language corrections before being published  
 
Declaration of competing interests  
Please complete a declaration of competing interests, considering the following questions:  
 
1. Have you in the past five years received reimbursements, fees, funding, or salary from an 
organisation that may in any way gain or lose financial ly from the publication of this 
manuscript, either now or in the future?  
 
2. Do you hold any stocks or shares in an organisation t hat may in any way gain or lose 
financi ally from the publication of this manuscript, either now or in the future?  
 
3. Do you hold or are you currently applying for any patents  relating to the content of the 
manuscript?  
 
4. Have you received reimbursements, fees, funding, or salary from an organiz ation that 
holds or has applied for patents relating to the content of the manuscript?  
 
5. Do you have any other financial competing interests?  
 
6. Do you have any non -financial competing interests in relation to this paper?  
 
If you can answer no to all of th e above, write 'I declare that I have  no competing interests' 
below. If your reply is yes to any, please give details below.  
 
I declare that I  have no competing interests  
 
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on my report to the authors and, if the manuscript is accepted f or publication, my named report 
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to the editors, which will not be published.  
 
I agree to the open peer review policy of the journal