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The Walden Library’s “Levels of Evidence” webpage provides information on different types of resources that can be used for evidence-based practice. The webpage categorizes resources into different levels of evidence, ranging from Level I, which includes systematic reviews and meta-analyses, to Level VII, which includes expert opinion and anecdotal evidence.
For each level of evidence, the webpage provides a list of relevant databases that can be used to search for resources. These databases include both filtered and non-filtered resources.
Filtered resources are those that have been screened for quality and relevance by experts in the field. These resources are typically found in databases that specialize in a particular subject area, such as PubMed or CINAHL. Filtered resources can be very useful for finding high-quality, relevant information on a specific topic.
Non-filtered resources, on the other hand, include sources that have not been screened for quality or relevance. These resources can be found in general search engines, such as Google or Bing, as well as in databases that do not specialize in a particular subject area. Non-filtered resources can be useful for getting a broad overview of a topic, but they may not always be reliable or relevant.
It is important to use a combination of filtered and non-filtered resources when conducting research for evidence-based practice. By using a variety of sources, researchers can ensure that they are getting a comprehensive understanding of a topic, while also ensuring that they are using high-quality, relevant information to inform their practice.