Evidence-based Medicine Literature Searching SC
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Transcript of Evidence-based Medicine Literature Searching SC
EBM Literature
Searching
Dr. Imad Salah Ahmed Hassan MD FACP FRCPI MSc MBBSChairman, Knowledge Translation Committee
Department of Medicine, KAMC,KSA
What is Best Evidence? Hierarchy of Levels of Evidence
Acquire the Best Evidence:Finding the Best Evidence First
Hierarchy of Sources of Evidence Pyramid
Pre-appraised, systematic reviews: Cochrane
Databases with EBM background: CKS, Essential Evidence Plus ®, DynaMed®, ACP’s PIER, BMJ Best Treatment, Guidelines Clearinghouse, Guidelines Finder Highly referenced, current e-
textbook: Up-to-Date
Standard e-textbooks (emedicine)
Primary Resources: PubMed (Clinical Queries), Medline
Pre-appraised, individual studies: ACP Journal Club, BestBets
*Adapted from Shaughnessy and Slawson
Self-Education & Training in EBM
EBM Resources: http://guides.mclibrary.duke.edu/content.php?pid=274
373&sid=2262393 http://www.med.yale.edu/library/education/guides/feat
ure/finditfast
CEBM Website: http://www.youtube.com/user/cebmed, http://www.cebm.net/index.aspx?o=1965
YouTube: http://www.youtube.com/watch?v=odfo9CQGi0c
The 6 Prerequisites for successful Literature Searching
1
•Know how to use a computer/electronic device.
2
•Know the Internet Jargon of Terms.
3
•Know the EBM Jargon of Terms.
4
•Know how to formulate your question.
5
•Know where to go.
6
•Know what to do when you get there: the site’s technical language/know-how.
Learn how to navigate your resource: Website Tutorial
Resources For EBM Knowledge Translation
EBM Resources
Point of Care Clinical
Resources
Updates
New Evidence
Decision Support Systems
Critical Appraisal
Tools
Evidence-Based Quality
Improvement
Evidence-Based
Guidelines & Policies
• DynaMed• Essential
Evidence Plus
• First Consult
• UpToDate• Clinical
Evidence• ACP
PIERS
• Mc Master Plus: STAT REF
• BMJ Evidence Updates/Alerts
• ACP Journal Club
• Open Clinical
• Dxplain• Emergenc
y Medicine on the Web
• Clinical Decision Making Calculators
• EBM toolbox
• CATmaker• Evidence
based medicine toolkit
• EBM Calculator
• National Guideline Clearinghouse
• NHS Evidence
• ICSI Institute for Clinical Systems Improvements
• AHRQ• Institute
for Healthcare Improvement
• Knowledge Translation Clearinghouse
• NICE
Advanced EBM SkillsEBM Hunting Tools
Hunting for Evidence
Please use in conjunction with the Hyperlinked Page.
1
•Decide if the question is a Foreground or Background Question
2
•Convert clinical Foreground question to searchable question (e.g. PICO)
3
•Choose the database you want to search: Primary (e.g. Pubmed), Secondary (e.g. Cochrane)or Tertiary (e.g. Trip Database)
4
•Apply filters to restrict your search (e.g. PubMed limits linked to PICO such as gender, age, study type limits)
“Finding Evidence”: Searching Strategy
5
•Appraise your Primary studies: Critical Appraisal Tools
6
•Assess result (e.g. using systematic review worksheet)
7
•Decide if you have enough information to make a decision
8
•If not then refine steps 2-4 until you either have an answer or decide there isn’t enough evidence to make an evidence based decision
“Finding Evidence”: Searching Strategy
Secrets of Literature Searching
Strategies for Literature Searching:
Strategy 1:
Background Knowledge: Textbooks/eTextbooks e.g. emedicine
Secrets of Literature Searching
Strategies for Literature Searching:
Strategy 2:
Foreground Knowledge: Primary Literature/Original Studies= Pubmed, Embase, Cinahl etc
Secrets of Literature Searching
Strategies for Literature Searching:
Strategy 3:
Foreground Knowledge: Secondary Literature/Pre-appraised Literature
Focused/Specific Broad/General Topic
Diagnosis e.g.Troponin in ACS Uric acid in Pre-eclampsia
Therapy e.g.– Misoprostol for PPH– Statins for hypercholesterolemia– Specific procedure
Focused/SpecificSystematic
Review Sites e.g. Cochrane
Technology Assessment
Sites e.g. Cochrane
Guidelines e.g.
Guideline Clearinghouse
Evidence Based eTextbooks e.g. Dynamed
Broad/General Topic
Management of Postpartum Hemorrhage
Management of hypertensionManagement of Fetal Respiratory
Distress SyndromeManagement of cancer pain
Guidelines
e.g.Guideline
Clearinghouse
Evidence Based eTextbooks e.g.
UpToDate
On-line
eTextbooks
Secrets of Literature Searching
Strategies for Literature Searching:
Strategy 4:
Foreground Knowledge: Evidence-based Quality Improvement: Policies, Pathways, Order Sets etc
NICE Pathways: guidance at your fingertips- www.nice.org.uk Society of Hospital Medicine: http://www.hospitalmedicine.org/ AHRQ Agency for Healthcare Research and Quality http://www.ahrq.gov/ Institute for Healthcare Improvement: http://www.ihi.org/IHI/Topics/LeadingSystemImprovement/ ICSI Institute for Clinical Systems Improvements http://www.icsi.org/index.aspx
Secrets of Literature Searching
Strategies for Literature Searching: Strategy 1:
Background Knowledge: Textbooks/eTextbooks e.g. emedicine
e.g. Pancreatitis, Appendicitis
How to access emedicine: Three ways! (applies to all EBM Websites)
1: Google it: pancreatitis emedicine
2. Click on the www address from the hyperlinked page
3: Saved address from your favorites links menu.
Topic Headings
Secrets of Literature Searching
Strategies for Literature Searching:
Strategy 2:
Foreground Knowledge: Primary Literature/Original Studies= Pubmed, Embase, Cinahl etc
A PICO for Appendicitis
P Acute Appendicitis
I Ultrasound
C Computerized Tomography
O Diagnostic Accuracy
Option 1: Use Pubmed via pico
(for both Primary and Secondary Literature)
Click on PICO
Select Publication Type from drop-down menu
TBL The Bottom Line
Increase your hits by using the Related option if this hit is the closest to your PICO
http://pubmedhh.nlm.nih.gov/nlm/
PubMed for Handhelds (PubMed4Hh): Download to your device from Play Store
MEDLINE/PubMed Search MEDLINE/PubMed Read Journal Abstracts
PICO search Patient, Intervention, Comparison, Outcome
askMEDLINE free-text, natural language search
Option 2: Use Pubmed search box
(for both Primary and Secondary Literature)
The Limits options
The Limits options
Option 3: Use the “Clinical Queries” option in Pubmed.(for both Primary and Secondary Literature)
Clinical Queries Option
Filters/LimitsFor Primary Literature
Systematic Reviews
Secrets of Literature Searching
Strategies for Literature Searching:
Strategy 3:
Foreground Knowledge: Secondary Literature/Pre-appraised Literature
Focused/Specific Broad/General Topic
Looking for EBM information in Guideline Clearinghouse directly from Google
Looking for EBM information in UpToDate directly from Google
Looking for Calculators for Decision Making e.g. Pancreatitis
Looking for Calculators for Decision Making
Looking for Calculators for Decision Making e.g. Pancreatitis
Looking for EBM Calculator in UpToDate
Technology Assessment Database in the COCHRANE LIBRARY
Critical Appraisal Checklists http://www.gla.ac.uk/departments/generalpracticeprimarycare/ebp/
checklists/#d.en.19536
§ Checklist for an article on treatment or prevention § Checklist for an article on qualitative research § Checklist for an article on decision analysis § Checklist for an article on an educational intervention § Checklist for an article on prognosis § Checklist for an article on harm or causation § Checklist for an article on guidelines § Checklist for an article on diagnosis or screening § Checklist for a systematic review § Checklist for economic evaluations
Looking for EBM Critical Appraisal Tools
Critical Appraisal Calculators
Oxford Centre for EBM: http://www.cebm.net/?o=1023
Secrets of Literature Searching
Strategies for Literature Searching:
Strategy 4:
Foreground Knowledge: Evidence-based Quality Improvement: Policies, Pathways etc
NICE Pathways: guidance at your fingertips- www.nice.org.uk Society of Hospital Medicine: http://www.hospitalmedicine.org/ AHRQ Agency for Healthcare Research and Quality http://www.ahrq.gov/ Institute for Healthcare Improvement: http://www.ihi.org/IHI/Topics/LeadingSystemImprovement/ ICSI Institute for Clinical Systems Improvements http://www.icsi.org/index.aspx
For a Clinical Pathway
For a bad incident: An evidence-based M&M Report ready
for use.
WebM&M Morbidity & Mortality Rounds: http://www.webmm.ahrq.gov/
With its PowerPoint presentation
For high re-admission rates
For delayed discharge
Boolean operator ‘OR’
After its creator George Boole
Akobeng AK. Arch Dis Child 2005 ; 90 : 837 – 840.
The Boolean Operators
Akobeng AK. Arch Dis Child 2005 ; 90 : 837 – 840.
Boolean operator ‘AND’
After its creator George Boole
Akobeng AK. Arch Dis Child 2005 ; 90 : 837 – 840.
Boolean operator ‘NOT’
After its creator George Boole
Boolean search After its creator George Boole
Boolean operators Meaning
Peptic ulcerOR Hemorrhage
Peptic ulcer AND Hemorrhage
Peptic ulcerNOT Hemorrhage
Summary
Competency in Literature Searching is a must for an effective healthcare force.
Thanks and Good Luck