What is filtered evidence?
Filtered or secondary sources are summaries and analyses of the evidence derived from and based on primary sources (unfiltered). They provide an appraisal of the quality of studies and often make recommendations for practice.
What is the difference between filtered and unfiltered information?
Filtered and unfiltered resources are differentiated by the level of evaluation the resource has undergone. Filtered resources have been evaluated for their quality, and often contain recommendations for practice. Examples include: systematic reviews.
What type of study would be at the top of a hierarchy of evidence sources?
In most evidence hierachies current, well designed systematic reviews and meta-analyses are at the top of the pyramid, and expert opinion and anecdotal experience are at the bottom.
Which is considered the highest quality evidence quizlet?
A systematic review or meta-analysis of an RCT is considered the highest level of quality evidence.
What evidence level is a cross sectional study?
Cross sectional study designs and case series form the lowest level of the aetiology hierarchy.
What kind of research is a cross sectional survey?
Definition: A cross-sectional study is defined as a type of observational research that analyzes data of variables collected at one given point in time across a sample population or a pre-defined subset. This study type is also known as cross-sectional analysis, transverse study, or prevalence study.
Why is a cross sectional study a limitation?
However, it is important to be aware of the predictive limitations of cross-sectional studies: “the primary limitation of the cross-sectional study design is that because the exposure and outcome are simultaneously assessed, there is generally no evidence of a temporal relationship between exposure and outcome.”