InfoGuides: Nutrition & Food Studies: Find Evidence Based Resources

Evidence Based Resources

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

Cochrane Library This link opens in a new window
Consists of six databases that contain different types of independent evidence to inform healthcare decision-making.
JAMAevidence This link opens in a new window
Uses Evidence-Based Medicine (EBM) to help decision makers identify the best available evidence by Providing guides to the systematic consideration of the validity, importance, and applicability of claims about the assessment of health problems and the outcomes of health care. Includes text of two books (Users' Guides to the Medical Literature: A Manual for Evidence-Based Clinical Practice and The Rational Clinical Examination: Evidence-Based Clinical Diagnosis), education guides, glossary, calculators, worksheets, question wizards, weekly RSS feed of featured JAMA articles, compiled clinical scenarios, podcasts, and user-level customization features.
SAGE Research Methods and Cases Online This link opens in a new window
Provides an overview of research methods (quantitative, qualitative and mixed methods) across the social and behavioral sciences. Includes SAGE book and reference material on research methods, and editorially selected material from SAGE journals. Also includes a searchable collection of case studies of real social research, commissioned and designed to help users understand abstract methodological concepts in practice.

EBM Calculators: Number needed to treat (NNT), Absolute Risk/Relative Risk, Odds Ratio, Sensitivity & Specificity, Positive Predictive Value
Evidence-Based Medicine Toolkit From the University of Alberta, tools adapted from , Users Guides series prepared by the Evidence Based Medicine Working Group and originally published in JAMA
Risk Reduction Calculator 12 calculators from JAMAEvidence

National Health and Nutrition Examination Survey examines a nationally representative sample of about 5,000 persons each year and findings will be used to determine the prevalence of major diseases and risk factors for diseases. Information will be used to assess nutritional status and its association with health promotion and disease prevention.
Ag Data Commons Through the Ag Data Commons, the USDA National Agricultural Library (NAL) provides services to make USDA funded research data systems and data products Findable, Accessible, Interoperable, and Reusable (FAIR).
Food Access Research Atlas USDA provides food access information tied to census data
Food Environment Atlas USDA compiles food environment factors, such as store/restaurant proximity, food prices, food and nutrition assistance programs, and community characteristics
ERS/USDA Data Products List of data sets on a variety of topics produced by the Economic Research Service (ERS) of the U.S. Food and Drug Administration.
Food Surveys Research Group of USDA Includes data tables for What We Eat in America (WWEIA), nutrient content search tool, and more
FoodData Central from USDA an integrated data system that provides expanded nutrient profile data and links to related agricultural and experimental research.
What we eat in America dietary intake interview component of the National Health and Nutrition Examination Survey (NHANES)
State of Childhood Obesity.Robert Wood Johnson provides interactive interface with the latest data
Global Health Data Exchange: Nutrition The Institute for Health Metrics and Evaluation (IHME) is an independent global health research center at the University of Washington. The Global Health Data Exchange (GHDx) is a data catalog created and supported by IHME.

Statista This link opens in a new window
Integrates more than 80,000 diverse topics of data and facts from over 22,500 international sources. Includes statistics and studies gathered from market researchers, trade organizations, scientific publications, government sources and international organizations. Create graphs, reports and infographics. Data is easily exportable for analysis. Statista reports now allow you to create your own interactive industry comparisons with Tableau Workbook. Find the free tool here or via https://www.tableau.com/trial/statista-benchmark-report-uk.
Harris Interactive This link opens in a new window
Surveys measuring public opinions, conducted both by telephone and online. Polls measure and trend the knowledge, opinions, behaviors and motivation of the general public. New survey data on a wide variety of subjects including politics, the economy, healthcare, foreign affairs, science and technology, sports and entertainment, and lifestyles are published weekly.

Roper Center for Public Opinion Research

Access data from a leader in the field of public opinion research. Search Roper's iPoll for survey questions and datasets from survey organizations such as Gallup, Harris, Pew Research, ABC, CBS, and more.

EBM Pyramid

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.

PRISMA PRISMA stands for Preferred Reporting Items for Systematic Reviews and Meta-Analyses. It is an evidence-based minimum set of items for reporting in systematic reviews and meta-analyses. Includes a checklist and flow diagram for planning a systematic review
Center for Evidence Based Practice Johns Hopkins University JHNEBP Includes rating scales, appraisal tools and more

Search using PICO: this is a template to formulate a clinical question

Patient, Population or Problem
- What are the characteristics of the patient or population?
- What is the condition or disease you are interested in?
Intervention or exposure
- What do you want to do with this patient (e.g. treat, diagnose, observe)?
Comparison
- What is the alternative to the intervention (e.g. placebo, different drug, surgery)?
Outcome
- What are the relevant outcomes (e.g. morbidity, death, complications)?

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

How to use	iPOLL Databank Tutorials
Data Format	[Zipped] SPSS, Stata, SAS, Excel
Registration	You will need to create an account to download data. George Mason University is a Roper Center member which means students, staff and faculty have full access to its resources.
How to cite:	How to cite