Reviews en zoekstrategie
workshop systematisch literatuurzoeken
Centrale Medische
Bibliotheek 2014
www.rug.nl/umcg/bibliotheek
Narrative review
Meta-analysis
A review
Evidence-based review
Systematic review
Comprehensive
overview
Systematic qualitative review
2
Fibromyalgia.
Chakrabarty S, Zoorob R.
Am Fam Physician. 2007 Jul 15;76(2):247-54.
Fibromyalgia is an idiopathic, chronic, nonarticular pain syndrome with
generalized tender points. It is a multisystem disease characterized by
sleep disturbance, fatigue, headache, morning stiffness, paresthesias,
and anxiety. Nearly 2 percent of the general population in the United
States suffers from fibromyalgia, with females of middle age being at
increased risk. The diagnosis is primarily based on the presence of
widespread pain for a period of at least three months and the presence
of 11 tender points among 18 specific anatomic sites. There are certain
comorbid conditions that overlap with, and also may be confused with,
fibromyalgia. Recently there has been improved recognition and
understanding of fibromyalgia. Although there are no guidelines for
treatment, there is evidence that a multidimensional approach with
patient education, cognitive behavior therapy, exercise, physical
therapy, and pharmacologic therapy can be effective.
3
Efficacy of Cognitive-Behavioral Therapies in Fibromyalgia
Syndrome - A Systematic Review and Metaanalysis of
Randomized Controlled Trials.
Bernardy K, Füber N, Köllner V, Häuser W.
J Rheumatol. 2010 Aug 3. [Epub ahead of print]
OBJECTIVE: We performed the first systematic review with
metaanalysis of the efficacy of cognitive-behavioral therapies (CBT) in
fibromyalgia syndrome (FM).
METHODS: We screened Cochrane Library, Medline, PsychINFO, and
Scopus (through June 2009) and the reference sections of original
studies and systematic reviews for CBT in FM. Randomized controlled
trials (RCT) comparing CBT to controls were analyzed. Primary
outcomes were pain, sleep, fatigue, and health-related quality of life
(HRQOL). Secondary outcomes were depressed mood, self-efficacy
pain, and healthcare-seeking behavior. Effects were summarized using
standardized mean differences (SMD).
(…)
4
Een zoekstrategie bouwen
hoe doe je dat?
nauw
breed
Zoekstrategie
klein
groot
Zoekresultaat
Een voorbeeld
Internet-treatment for (reducing) alcohol drinking/ alcohol
related disorders

Alcohol drinking

Internet intervention

Randomized controlled trials
Stap 1: concepten zoekstrategie

Alcohol drinking

Internet therapies

randomized controlled trials
Stap 2: zoektermen per concept
Health care
workers
MeSH
Textwoorden
Influenza
vaccinatie
ouderen
Hoe kom je aan zoektermen?
pilot-searches!

selecteer relevante titels

bekijk indexering (MeSH)
Start “omgekeerd”:
begin met wat je al hebt
Health care
workers
"Health
Personnel"[Mesh]
Influenza vaccinatie
Ouderen
"Influenza Vaccines"[Mesh]
"Aged"[Mesh]
"Influenza, Human"[Mesh]
+
"Vaccination"[Mesh]
"Vaccines"[Mesh]
Health care worker*
Medical staff
Nursing staff
Nurses
…
influenza vaccination*
influenza immunization*
influenza immunisation*
flu vaccination*
…
aged
elderly
older people
older patient*
…
Voorbeeld Medical Subject Heading
All MeSH Categories
Persons Category
Persons
Age Groups
Adult
Aged
Aged, 80 and over
Frail Elderly
Stap 3: Zoektermen combineren
Boolean
operators
AND
OR
NOT
(concept) zoekstrategie PubMed
#1
#2
#3
"Health Personnel"[Mesh]
Health care worker*[TIAB] OR Medical staff[TIAB]
(#1 OR #2)  1e string
#4
#5
"Influenza Vaccines"[Mesh]
#6
#7
#8
#9
"Influenza, Human"[Mesh] AND ("Vaccination"[Mesh] OR
"Vaccines"[Mesh])
(influenza[TIAB] OR flu[TIAB]) AND (vaccination*[TIAB]
OR immunization*[TIAB] OR immunisation*[TIAB])
(#4 OR #5 OR #6)  2e string
#10
"Aged"[Mesh]
aged[TIAB] OR elderly[TIAB] OR older people[TIAB]
OR older patient*[TIAB]
(#8 OR #9)  3e string
#11
(#3 AND #7 AND #10)  combinatie van strings 1, 2 en 3
Opdracht 1 Smart drugs
Review effectiviteit van “smart drugs”
(neurocognitieverbeterende middelen) bij gezonde/
niet-zieke mensen.
Pilot search: smart drugs for cognitive enhancement
Probeer mbv het resultaat van de pilot search
zoektermen te vinden (MeSH en textwoorden) voor
“smart drugs”
PubMed notaties en tools
"heart rate"[MeSH Terms]
MeSH, geexploeerd Index terms
“heart rate”[MeSH:NoExp]
MeSH, niet geexplodeerd
Heart*
Truncatie (het sterretje vervangt één of
heart rate*
meerdere karakters)
Prase search (NB niet mogelijk:
“heart rate”
“heart rate*”)
heart rate*[TIAB]
Title, abstract
heart rate*[tw]
textword =ti, ab, AUkeyw, MESH
Heart [AU]
Author
Heart rate*[all fields]
Ti, author, inst, ab, Aukeyw,
Search fields
MESH
AND, OR, NOT
Boolean operators
geen proximity operators
Embase.com
(gebruik Advanced search. Automated mapping
uitzetten door weghalen bovenste 2 vinkjes (“map to..” en “include..”)!
'heart rate'/exp
'heart rate'/de
Heart AND rate*
EMTREE term, geexploeerd
EMTREE term, niet geexplodeerd
Truncatie (NB niet mogelijk: 2 bijelkaar
horende termen trunceren zoals heart rate* in
PubMed, omdat Embase de termen uit elkaar
trekt. Oplossing: ‘heart rate’ OR ‘heart rates’
‘heart rate’
Phrase search
‘heart rate’:ab,ti
‘heart rate’:ab,ti, de
heart:au
‘heart’
Search Fields
Title, abstract
ti, ab, descriptor )
Author
Ti, author, institute, ab, keywords
AND, OR, NOT
NEXT/n
Boolean operators
Proximity operators
Cinahl (EBSCO)
ook via EBSCO: PsycINFO, Medline
(MH "Heart Rate+")
Cinahl headings, geexploeerd
(MH "Heart Rate")
Cinahl headings, niet geexpl.
“heart rate”
Truncatie
Prase search (dubbele
aanhalingstekens kunnen ook
worden weggelaten, geeft zelfde
resultaat)
TI heart rate* or AB heart rate*
Title, abstract
TX heart rate*
Textwoorden
AND, OR, NOT
Boolean operators
NEAR, WITHIN
Proximity operators
heart rate*
Meer databases

Cochrane Library Cochrane reviews, clinical trials

Embase
biomedisch, farmacologie

PsycINFO
Psychologie

Cinahl
Verpleegkunde, psychosociaal

ERIC
educatie, pedagogiek

Web of Science
SCI, SSCI citations

PiCarta
oa NL tijdschriftartikelen
Vraag de CMB om advies
Oefening 2: zoektermen omzetten naar
een andere database
20
Stap 4: methodologische filters

Gevalideerde “zoekstrings” gericht op vinden
van bepaalde onderzoeksdesigns
(bv gerandomiseerd of observationeel
onderzoek)

Bv PubMed filter Therapy/narrow (Haynes RB
e.a.)
Stap 5: Evalueren & verbeteren
Dit is een
cruciale stap
bij het
ontwikkelen
van een
goede
strategie
Evalueren & verbeteren
1. zoekresultaat behapbaar?
2. worden alle (bekende) relevante titels gevonden
met de zoekstrategie?
3. Leveren checks (referentielijsten, related
citations) géén extra relevante titels meer op?
“Nee”? zoekstrategie verbeteren!
Save search
Tips

Persoonlijk account per database

datum in search name

Backup in bijvoorbeeld Word
Aanvullende zoekmethoden

Referentielijsten

Handsearching

Experts, fabrikanten mailen (ongepubliceerde
studies)

Clinical trial registers (ongepubliceerde studies)

Google
Beschrijving van zoekstrategie

Naam databases

Last search update

Restricties

Zoektermen

Aanvullende zoekmethoden
Praktijkvoorbeeld systematic review

Meer weten?
 PRISMA Statement
Cochrane Handbook for systematic reviewers
CRD's guidance for undertaking systematic reviews
Advies CMB (mailen, afspraak)
 s.van.der.werf@umcg.nl / cmb@umcg.nl
 www.rug.nl/umcg/bibliotheek

Oefening 3:
zoekstrings combineren &
zoekstrategie evalueren
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