Review for 10.1186/s12876-016-0435-2 (2016)

Reviewer ’s report  
 
Title: Abdominal migraine in children: Association between gastric motility parameters and 
clinical characteristics  
 
 
Version: 1 Date: 19 Dec 2015  
 
 
Reviewer: M. Masudur  Rahman  
 
 
Reviewer's report:  
 
Comments:  
 
 
1. How the healthy controls were selected needs to be mentioned briefly.  
 
2. A table comparing the demographic characteristics  (with more parameters if possible ) of   
cases and controls may be added.  
 
3. A table of Rome III diagnostic criteria for AM may be added.  
 
4. In some places of result section SD are greater than mean values as in page 12( lines 28 -
30) "……. the mean frequency of abdominal pain episodes was 20.4  per month 
(SD23.7/month)". In these places median values with range can be added.   
 
Are the methods appropriate and well described?  
If not, please specify what is required in your comments to the authors.  
 
Yes 
 
Does the work include the necessary controls?  
If not, please specify which controls are required in your comments to the authors.  
 
Unable to assess  
Are the conclusions drawn ade quately supported by the data shown?  
If not, please explain in your comments to the authors.  
 
Yes 
 
Are you able to assess any statistics in the manuscript or would you recommend an 
additional statistical review?  
If an additional statistical  review is recommended, please specify what aspects require further 
assessment in your comments to the editors.  
 
I recommend additional statistical review  
 
Quality of written English  
Please indicate the quality of language in the manuscript:  
 
Acceptable  
 
Declaration of competing interests  
Please complete a declaration of competing interests, considering the following questions:  
 
1. Have you in the past five y ears received reimbursements, fees, funding, or salary from 
an organisation that may in any way gain or lose financially from the publication of this  
manuscript, either now or in the future?  
 
2. Do you hold any stocks or shares in an organisation that may i n any way gain or lose  
financially 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 organization 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 com peting interests in relation to this paper?  
 
If you can answer no to all of the 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 for publication, my named report  
including any attachments I upload will be posted on the website along  with the authors'  
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which I do not wish to be included in my named report  can be included as confidential comments  
to the editors, which will not be published.  
 
I agree to the open peer review policy of the journal