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 kinds of studies are relevant?
Use the handy metasearch tools below to find many different levels of evidence in one easy search:
Searches across a large range of evidence based resources including: evidence based synopses, Systematic Reviews, guidelines organised by country, core primary research, eTextbooks and patient information.
Searches for original research, systematic reviews and guidelines.
Practice guidelines are also searchable in CINAHL and Medline:
Systematic Reviews and Meta-Analyses are also searchable in Curtin's databases below:
Evidence-Based Journals (Search individually in the library catalogue)
Primary research articles within the discipline are selected for quality and clinical relevance. A structured abstract and expert commentary are provided for each study. The following journals use predefined criteria to publish evaluated abstracts of the literature and comment on the methodology of each published study:
Is there more synthesised evidence that busy practitioners can access to quickly make informed decisions about patient care?
The diagram below shows higher levels of synthesised evidence.
Clinical practice guidelines "are designed to support the decision-making processes in patient care. The content of a guideline is based on a systematic review of clinical evidence - the main source for evidence-based care". http://www.openclinical.org/guidelines.html