Review for 10.1186/s12876-017-0672-z (2017)

Reviewer’ s report
Title: FREQUENCY PATTERNS OF CORE CONSTIPATION SYMPTOMS AMONG THE
ASIAN ADULTS: A SYSTEMATIC REVIEW
Version: 0Date: 23 May 2017
Reviewer: Giuseppe Chiarioni
Reviewer's report:
I read with interest the MS "FREQUENCY PATTERNS OF CORE CONSTIPATION
SYMPTOMS AMONG THE ASIAN ADULTS: A SYSTEMATIC REVIEW" by Wahab PA andcoworkers. It is a well designed review dealing with a demanding issue. However, the paper needsto be improved by: a)comparison with epidemiology studies not related to the Rome criteria, b)Authors' suggestions about efficacy of the Rome Criteria to diagnose FC and IBS in AsianPopulations according to the reported data.
Are the methods appropriate and well described?
If not, please specify what is required in your comments to the authors.
YesDoes the work include the necessary controls?
If not, please specify which controls are required in your comments to the authors.
Yes
Are the conclusions drawn adequately supported by the data shown?
If not, please explain in your comments to the authors.
NoAre 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 furtherassessment in your comments to the editors.
I am able to assess the statisticsQuality of written English
Please indicate the quality of language in the manuscript:
Acceptable
Declaration of competing interests
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