Reviewer's report 
 Migraine, Fibromyalgia, and Depression Among People With IBS: A Prevalence Study Title: 
 1  23 May 2006 Version: Date: 
 Olafur Palsson Reviewer: 
Reviewer's report: 
General 
This ambitious and impressive study is a valuable contribution to the literature on comorbidities in IBS. 
Major strengths are the size of the IBS and control samples (the largest ever in a comorbidity study on IBS), the nature of the patient population (more respresentative of general clinical patients than seen in most studies), and the several ways that the authors control for confounds. 
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Major Compulsory Revisions (that the author must respond to before a decision on publication can be reached) 
None 
------------------------------------------------------------------------------- Minor Essential Revisions (such as missing labels on figures, or the wrong use of a term, which the author can be trusted to correct) 
None 
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Discretionary Revisions (which the author can choose to ignore) None 
 Accept without revision What next?: 
 An article of outstanding merit and interest in its field Level of interest: 
 Acceptable Quality of written English: 
 No Statistical review: 
Declaration of competing interests: 
I declare that I have no competing interests 
Reviewer's report 
 Migraine, Fibromyalgia, and Depression Among People With IBS: A Prevalence Study Title: 
 1  23 May 2006 Version: Date: 
 Olafur Palsson Reviewer: 
Reviewer's report: 
General 
This ambitious and impressive study is a valuable contribution to the literature on comorbidities in IBS. 
Major strengths are the size of the IBS and control samples (the largest ever in a comorbidity study on IBS), the nature of the patient population (more respresentative of general clinical patients than seen in most studies), and the several ways that the authors control for confounds. 
------------------------------------------------------------------------------- 
Major Compulsory Revisions (that the author must respond to before a decision on publication can be reached) 
None 
------------------------------------------------------------------------------- Minor Essential Revisions (such as missing labels on figures, or the wrong use of a term, which the author can be trusted to correct) 
None 
------------------------------------------------------------------------------- 
Discretionary Revisions (which the author can choose to ignore) None 
 Accept without revision What next?: 
 An article of outstanding merit and interest in its field Level of interest: 
 Acceptable Quality of written English: 
 No Statistical review: 
Declaration of competing interests: 
I declare that I have no competing interests 
Please review this paper.
user
Reviewer's report 
 Migraine, Fibromyalgia, and Depression Among People With IBS: A Prevalence Study Title: 
 1  23 May 2006 Version: Date: 
 Olafur Palsson Reviewer: 
Reviewer's report: 
General 
This ambitious and impressive study is a valuable contribution to the literature on comorbidities in IBS. 
Major strengths are the size of the IBS and control samples (the largest ever in a comorbidity study on IBS), the nature of the patient population (more respresentative of general clinical patients than seen in most studies), and the several ways that the authors control for confounds. 
------------------------------------------------------------------------------- 
Major Compulsory Revisions (that the author must respond to before a decision on publication can be reached) 
None 
------------------------------------------------------------------------------- Minor Essential Revisions (such as missing labels on figures, or the wrong use of a term, which the author can be trusted to correct) 
None 
------------------------------------------------------------------------------- 
Discretionary Revisions (which the author can choose to ignore) None 
 Accept without revision What next?: 
 An article of outstanding merit and interest in its field Level of interest: 
 Acceptable Quality of written English: 
 No Statistical review: 
Declaration of competing interests: 
I declare that I have no competing interests 
assistant