efficiënt en systematisch zoeken in bibliografische databases
TRANSCRIPT
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Efficiënt en systematisch zoeken in bibliografische
databanken
Donderdag 9 MaartVOGIN-IP lezing 2017
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Medische Bibliotheek Erasmus MC
food breast cancer management
Hoeveel hits verwacht je?
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
Variaties in een database
Research onderwerp:
Vitamins and hormones within the field of clinical dermatology
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
Systematic approach
(vitamins[mh] OR hormones[mh] OR vitamins[pa] OR hormones[pa] OR vitamin*[tiab] OR hormon*[tiab]) AND ("Clinical Study" [pt] OR clinical medicine[mh] OR Clinical Studies as Topic[mh] OR clinical*[tiab] ) AND (dermatology[mh] OR dermatol*[tiab] OR skin diseases[mh] OR skin disease*[tiab])
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
('thermal injury'/de OR 'heat injury'/de OR 'burn'/exp OR 'burn patient'/de OR 'burn scar'/de OR 'burn nursing'/de OR 'burn unit'/de OR (((burn OR burned ) NOT burn*-out*) OR burns OR ((thermal OR heat) NEAR/3 injur*)):ab,ti) AND ('quality of life'/exp OR 'health status'/exp OR 'general health status assessment'/exp OR 'health status indicator'/de OR 'disability'/exp OR 'work resumption'/de OR 'return to work'/de OR 'sexual function'/de OR 'daily life activity'/exp OR 'chronic pain'/exp OR 'functional disease'/de OR 'functional assessment'/de OR 'disabled person'/de OR 'physical activity'/exp OR 'physical performance'/exp OR 'independent living'/exp OR 'social participation'/de OR fitness/de OR ((qualit* NEAR/3 life*) OR hrql OR hrqol OR ((health OR functional* OR physic*) NEAR/3 (stat* OR limitation* OR outcome* OR recover* OR impair* OR result* OR fitness*)) OR disab* OR invalid* OR ((walk* OR work* OR mobilit*) NEAR/3 (difficult* OR limit*)) OR (work NEAR/3 (resum* OR return OR back)) OR ((sexual* OR disease* OR assess* OR hand OR adaptat*) NEAR/3 function*) OR (dail* NEAR/3 (life OR living) NEAR/3 activit*) OR adl OR adls OR iadl OR iadls OR badl OR badls OR ((chronic* OR long*-term* OR longterm*) NEAR/3 (pain*)) OR (loss NEAR/3 function*) OR (burn NEAR/3 outcome* NEAR/6 questionnaire*) OR boq OR ((burn OR burns) NEAR/6 health NEAR/3 scale*) OR bshs OR euroqol OR sf36 OR sf-36 OR short-form-36 OR eq-5d OR eq-6d OR eq5d OR eq6d OR itqol OR (physical* NEAR/3 (activ* OR perform*)) OR (independent* NEAR/3 living) OR (social* NEAR/3 participat*)):ab,ti) AND ('cohort analysis'/exp OR 'longitudinal study'/exp OR 'retrospective study'/exp OR 'prospective study'/exp OR 'validation study'/exp OR 'validity'/exp OR 'sensitivity and specificity'/exp OR 'clinical article'/de OR 'observational study'/de OR 'major clinical study'/de OR 'follow up'/de OR 'epidemiological data'/de OR 'case control study'/exp OR 'cross-sectional study'/exp OR (cohort* OR longitudinal* OR retrospectiv* OR prospectiv* OR validat* OR validit* OR (observation* NEAR/3 stud*) OR sensitiv* OR specific* OR 'follow* up*' OR followup* OR epidemiolog* OR 'case control*' OR 'cross-section*'):ab,ti) NOT ([animals]/lim NOT [humans]/lim)
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC 33
Wie zijn wij / wat doen wij?
Wichor Bramer | Gerdien de JongeInformatiespecialisten Medische Bibliotheek – Erasmus MC Rotterdam
[email protected] | @wichor | nl.linkedin.com/in/wichor>300 systematische searches per jaar
>25 co-auteurschappen van reviews (link)PhD: Efficiency in librarian-mediated searches for systematic reviews
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Medische Bibliotheek Erasmus MC
Tijd nodig voor zoekactie systematic review
Bramer WM, Rethlefsen ML, Mast F, Kleijnen J. A pragmatic evaluation of a new method for librarian-mediated literature searches for systematic reviews. submitted. 2017.
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Medische Bibliotheek Erasmus MC
Wie zijn jullie?
Vakgebied (biomedisch / anders)
Zoekacties (waarvoor / hoeveel / hoe)
Databases / interfaces (pubmed / embase / ovid / ebsco / discoverytools / google (scholar) )
Thesaurus ?
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Medische Bibliotheek Erasmus MC
Research question exhaustive search
Systematic searching
1. Examining the research question
2. Identifying key terms
a. Thesaurus terms
b. Free text terms
3. Creating a basic search strategy
4. Optimizing the basic strategy
5. Translating the strategy between databases
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Medische Bibliotheek Erasmus MC
The Research Question
Clear and focused
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Medische Bibliotheek Erasmus MC 38
Clear and focused research questionHow can gist knowledge of patients be measured
Is scopic stabilisation better than Bristow Latarjet for treating an Anterior glenohumeral luxation with labrum injury (no ossale disorder) in a 20 YO rugby player for recurrent luxation or other Patient Related Outcome Measures
Dietary intake and cardiovascular disease
TOO VAGUE
TOO SPECIFIC
TOO BROAD
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Medische Bibliotheek Erasmus MC
The Research Question
Clear and focused
Which articles can answer the question?
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Medische Bibliotheek Erasmus MC
Which articles can answer the question?
Facilitators and barriers in preconception care
evaluation studies of preconception care
Predictive factors for oronasal fistulas in children treated for clef lip
follow up studies of children treated for clef lip
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Medische Bibliotheek Erasmus MC
The Research Question
Clear and focused
Which articles can answer the question?
Understanding the research question?
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Medische Bibliotheek Erasmus MC
Do you need to fully understand the research question?What is the Cell contribution to chondroid / endochondreal /
intramembranous bone formation
((('bone development'/de OR 'bone mineralization'/de OR 'bone maturation'/de OR ossification/de OR 'bone conduction'/de OR 'bone transplantation'/exp OR 'bone matrix'/exp OR 'bone growth'/exp OR 'bone remodeling'/de OR ((bone NEAR/6 (minerali* OR develop* OR format* OR synthesis* OR growth* OR graft* OR transplant* OR engineer* OR defect* OR matri* OR remodel* OR conduct* OR maturat*)) OR osteogen* OR ossificat*):ab,ti) AND (chondroid* OR transchondroid* OR enchondr* OR endochondr* OR intermembran* OR cartilagin* OR (inter NEXT/1 membran*)):ab,ti) OR 'enchondral ossification'/de) AND ('cell death'/de OR 'cell survival'/de OR apoptosis/de OR 'cell differentiation'/de OR 'cell fate'/de OR 'host cell'/de OR 'cell lineage'/de OR (((cell* OR msc OR osteoblast* OR osteocyte* OR osteoclast* OR preosteoblast*) NEAR/3 (death OR senescen* OR contribut* OR differentiat* OR fate OR plasticit* OR reprogram* OR donor* OR host* OR recruit* OR surviv* OR viabilit* OR lineage*)) OR apoptosis):ab,ti)
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Medische Bibliotheek Erasmus MC
The Research Question
Clear and focused
Which articles can answer the question?
Understanding the research question?
Elements (Key Concepts):
- Watch our for Bias and Duplicates
- Which elements to use in search?
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Medische Bibliotheek Erasmus MC
Elements : Bias
Very specific characteristicsDuration of breastfeeding and intelligence
JudgementsPoor family functioning, harsh parenting and bullying behavior
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Medische Bibliotheek Erasmus MC
Elements : Duplicates
Pre-eclampsia AND pregnant AND women
Lichtenstein therapy AND inguinal hernias
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Medische Bibliotheek Erasmus MC
Does eating broccoli help in the prevention of cancer
generalspecific
important
unimportant
Broccoli Cancer
Prevention
Broccoli Cancer Prevention
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Medische Bibliotheek Erasmus MC
Identifying search terms
Thesaurus
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Medische Bibliotheek Erasmus MC
Identifying free text words
Optimal sensitivity only by additionally searching in title / abstract: Relevant, non-inverted terms from synonyms/ entry terms
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
Identifying free text words
Optimal sensitivity only by additionally searching in title / abstract: Relevant, non-inverted terms from synonyms / entry terms
Shoulder: glenohumeral joint- humeroscapular joint- scapulo humeral joint- scapulohumeral joint- articulatio humeri Relevant words / phrases from narrower terms
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Medische Bibliotheek Erasmus MC
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Medische Bibliotheek Erasmus MC
Identifying free text words
Optimal sensitivity only by additionally searching in title / abstract: Relevant, non-inverted terms from synonyms / entry terms
Shoulder: glenohumeral joint- humeroscapular joint- scapulo humeral joint- scapulohumeral joint- articulatio humeri Relevant words / phrases from narrower terms
Colorectal Neoplasms: Colonic cancer- Cancer of Sigmoid- Rectum tumor- Anal Neoplasms…etc…
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Medische Bibliotheek Erasmus MC
Creating a basic search strategy
DEMO
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Medische Bibliotheek Erasmus MC
Creating a basic search strategy (summary)
Type code in Word Open an element with () For emtree terms type ''/exp and paste term After pasting all emtree terms, type OR ():ab,ti within that element once
for free text words Type single word synonyms first Type (() NEAR/3 ()) somewhere in the document to reuse Copy (() NEAR/3 ()) into the ():ab,ti part search for phrase variants, and
add the words
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Medische Bibliotheek Erasmus MC
Optimizing your strategy
Sort by relevance and check title / abstract and thesaurusAdd new relevant words to the search in Word
Temporarily change the syntax and check words:
Per element, keeping the rest unchanged (thesaurus) NOT (free text) (free text) NOT (thesaurus)
DEMO
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Medische Bibliotheek Erasmus MC
Considerations
Explode a broad term or not?
Start exploded, when many irrelevant results appear, be more specific
Truncate a term or not?
Truncate as much as possible, hardly noise
Phrases or proximity?
Always proximity, easier and more sensitive
How broad should proximity be?
Start with 3, increase with 3 and
evaluate newly retrieved articles
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Medische Bibliotheek Erasmus MC
Vertalen van zoekacties tussen databases
Embase.com (Embase and Medline) -1Thorough optimization of thesaurus terms and title / abstract terms in search strategy
Macro and edit thesaurus
Medline (Ovid incl ePub) -2MeSH terms in PubMed / Optimization
Add extra terms Remove thesaurus
Cochrane library -3
Macro
Web-of-science -4
Macro
Scopus
Macro and edit thesaurus
CINAHL (EBSCO)
edit thesaurus
PsycINFO (OvidSP)
Macro and edit
Google Scholar -5
Liliacs / Scielo / Popline / Trials Registers / WorldCatBasic search strategy with
AND, OR parentheses based on basic Google terms
DEMO
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Medische Bibliotheek Erasmus MC
Success factors
Optimization techniques Macros for database translation Single-line search strategies Database choice and order Direct feedback by researcher Creating queries in Word Computer literaracy Experience (be pro active)
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Medische Bibliotheek Erasmus MC
Effect voor de organisatie