There are differences in information resources
All dental resources are NOT equally important
The usefulness of any information source depends on the relevance of the information in the source, the validity of this information, and the work (time, effort, and money) required to access the information.
Usefulness equation :
Usefulness of any info source = Relevance of info x Validity of info
Work needed to obtain info
Critical appraisal is the systematic evaluation of clinical research papers in order to establish:
If the answer to any of these questions is “no”, you can save yourself the trouble of reading the rest of it.