synthesis or systematic review is a comprehensive summary of all the research evidence related to a focused clinical question. It involves a multi-step process in which the question is formulated, the relevant studies are identified and appraised for study quality, relevant study findings are extracted and synthesised either quantitatively (in the form of meta-analysis) or non-quantitatively, and conclusions are drawn.
ACCESSSS is a service [created at McMaster University) to help provide current best evidence for clinical decisions. It conducts searches simultaneously in several evidence-based information services (online evidence-based texts, evidence-based guidelines and pre-appraised journal publications). ACCESSSS also provides email alerts to newly published evidence in the user’s chosen area(s) of training/interest.
Journal articles below the level of "Summary Clinical Texts" ... are selected from over 120 clinical journals through a systematic process of critical appraisal by expert research staff ... and ratings of qualifying articles by 3 front-line clinicians from a panel of over 3500 physicians around the world.
Search healthevidence.org for access to 7,512 quality-rated systematic reviews evaluating the effectiveness and cost-effectiveness of public health interventions, including cost data. We search the published literature and compile public health relevant reviews -- eliminating your need to search and screen individual databases.