Review for 10.1186/s12876-020-01562-y (2020)

Reviewer’s report
Title: 
Development and Validation of the Peptic Ulcer Scale under the System
of Quality of Life Instruments for Chronic Diseases based on Classical Test
Theory and Generalizability Theory
Version: 
0 
Date: 
22 Sep 2020
Reviewer's report:
A paper which is well designed, constructed and written. 
In my opinion, it
significantly adds to the development and validation of peptic ulcer disease
under the system of quality of life instruments for chronic diseases (QLICD-PU).
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Is the study design appropriate to answer the research question (including the use
of appropriate controls), and are the conclusions supported by the evidence
presented?
Yes
Are the methods sufficiently described to allow the study to be repeated?
Yes
Is the use of statistics and treatment of uncertainties appropriate?
Yes
Is the presentation of the work clear?
Yes
Are the images in this manuscript (including electrophoretic gels and blots) free
from apparent manipulation?
Yes