Evidence Analysis Library Projects and guidelines of the Academy of Nutrition and Dietetics
eLENA - Library of Evidence for Nutrition Actions WHO online library of evidence-based nutrition interventions
USDA Nutrition Evidence Systematic Review Conducts systematic reviews to inform Federal nutrition policy and programs
EBM Pyramid and EBM Page Generator, copyright 2006 Trustees of Dartmouth College and Yale University. All Rights Reserved.
Produced by Jan Glover, David Izzo, Karen Odato and Lei Wang.
Systematic reviews ask a specific clinical question, perform a comprehensive literature search, eliminate the poorly done studies and attempt to make practice recommendations based on the well-done studies. A meta-analysis is a systematic review that combines all the results of all the studies into a single statistical analysis of results.
Critically-appraised individual articles evaluate and synopsize individual research studies, while critically-appraised topics evaluate and synthesize multiple research studies.
Case control studies looks at two groups retrospectively--one with the condition and one without-- to determine causes and natural history. Cohort studies are longitudinal studies that follow two groups (a control group and a group the condition of intervention of interest) over time. Randomized controlled double blind studies are the gold standard for medical evidence.
Search using PICO: this is a template to formulate a clinical question
Anatomy of PICO from Duke's Introduction to Evidence Based Practice
Finding the Evidence 1 – Using PICO to formulate a search question Centre for Evidence-Based Medicine