Quality CriteriaAuthor, YearRepresentative sample selected from a relevant populationExplicit definition of casesSufficient description of distribution of prognostic factorsFollow-up long enough for important events to occurOutcomes assessed using objective criteria/blinding usedQuality Score
What should be in the cell

Definitions
First author, Year of PublicationY/N/Unclear

Is the population examined relevant to the disease and age group? or atypical?
Yes
-randomly selected from registry
-consecutive patients
No
-self-selected volunteers
-investigator selected
Y/N

Yes
-authors layout explicit definitions for their cases
-authors reference another article for methods and we are able to pull the information from that article
No
-authors imply definition, but do not explicitly state it
Y/N/Unclear/NAY/N/Unclear

Did the authors allow enough time for the outcomes to occur.
Y/N/Unclear

Do the methods describe the measures in detail; are they reliable/valid; are references provided?
Good/Fair/Poor

From: Appendix H, Quality Rating Criteria

Cover of Vaginal Birth After Cesarean: New Insights
Vaginal Birth After Cesarean: New Insights.
Evidence Reports/Technology Assessments, No. 191.
Guise JM, Eden K, Emeis C, et al.

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