STUDIES: Original journal articles reporting information about clinical trials, etc.
SYNTHESES: Draw upon studies and combine them - the most familiar format being the systematic review.
SYNOPSES: Evidenced-based abstracts of journal articles.
SUMMARIES: Integrate the information from the lower levels of the pyramid and in so doing, the summaries address several aspects of a given condition.
SYSTEMS: Highly advanced medical record systems "in which a patient's characteristics are automatically linked to the current best evidence that matches the patient's specific circumstances" and provides caregivers notification of key aspects of management - decision support systems. These systems are not available today.
Trip: Turning Research into Practice - a clinical search engine designed to allow users to quickly and easily find and use high-quality research evidence to support their practice and/or care. This one-stop resource searches across multiple internet sites for evidence-based content including medical journals, Cochrane Systematic reviews, clinical guidelines, etc.